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The Aqueduct of Segovia (or more accurately, the aqueduct bridge) is a Roman aqueduct in Segovia, Spain. With the Pont du Gard in France, it is one of the best-preserved elevated Roman aqueducts.
The aqueduct once transported water from the Rio Frio river, situated in mountains 17 km (11 mi) from the city in the La Acebeda region. It runs 15 km (9.3 mi) before arriving in the city.
The water was first gathered in a tank known as El Caserón (or Big House), and was then led through a channel to a second tower known as the Casa de Aguas (or Waterhouse). There it was naturally decanted and sand settled out before the water continued its route. Next the water traveled 728 m (796 yd) on a one-percent grade until it was high upon the Postigo, a rocky outcropping on which sits the walled city center with its Alcázar or castle.
To reach the old city, the water is conveyed by its aqueduct bridge. At Plaza de Díaz Sanz (Díaz Sanz Plaza), the structure makes an abrupt turn and heads toward Plaza Azoguejo (Azoguejo Plaza). It is there the monument begins to display its full splendor. At its tallest, the aqueduct reaches a height of 28.5 m (93 ft 6 in), including nearly 6 m (19 ft 8 in) of foundation.
The Pont du Gard is an ancient Roman aqueduct that crosses the Gardon River near the town of Vers-Pont-du-Gard in southern France. The Pont du Gard is the highest of all elevated Roman aqueducts, and, along with the Aqueduct of Segovia,
The aqueduct bridge is part of the Nîmes aqueduct, a 31 mile system built in the first century AD to carry water from a spring at Uzès to the Roman colony of Nemausus (Nîmes). Because of the uneven terrain between the two points, the mostly underground aqueduct followed a long, winding route that called for a bridge across the gorge of the Gardon River.
The bridge has three tiers of arches, stands 160 ft high, and descends a mere 1 inch - a gradient of only 1 in 18,241 – while the whole aqueduct descends in height by only 12.6 m (41 ft) over its entire length, which is indicative of the great precision that Roman engineers were able to achieve, using simple technology. The aqueduct formerly carried an estimated 40,000 m3 of water a day to the fountains, baths and homes of the citizens of Nîmes. It may have been in use as late as the 6th century, with some parts used for significantly longer, but a lack of maintenance after the 4th century led to clogging by mineral deposits and debris that eventually choked off the flow of water.
This Girod Swiss mechanical watch image is comprised of twenty five individual stack focused images, slightly stylized.
During our voyage on the ColorLine from Kiel, Germany to Oslo, Norway, we had the opportunity to sail beneath the remarkable Great Belt Bridge. Spanning the Great Belt strait, this engineering marvel connects the Danish islands of Zealand and Funen. With a total length of approximately 18.2 kilometers, the Great Belt Bridge is ranked among the world's longest suspension bridges. Its construction involved intricate design and precise engineering, making it an impressive feat of architecture. As we sailed underneath, we were captivated by the bridge's immense size and structure, appreciating its significance in facilitating efficient transportation between the Danish islands – Great Belt Strait, Denmark
The genius that was Isambard Kingdom Brunel watches over one of his engineering marvels, Paddington railway station in London, which opened in 1854 & part of Brunel's empire which included the Great Western Railway which still runs to the station.
De Boreas, Van Oord's nieuwste offshore installatievaartuig, lag op 17 juni 2025 aangemeerd aan de Wilhelminakade in Rotterdam. Normaal maken cruiseschepen hier de dienst uit, maar voor de doop van de Boreas werd een uitzondering gemaakt. Met een hijscapaciteit van 3.200 ton, dual-fuel methanolmotoren en een reikwijdte van 155 meter is het 's werelds grootste en duurzaamste jack-up schip voor windturbine-installatie. Een indrukwekkend gezicht, in de schemering nog eens versterkt de tientallen lampen aan boord.
An airplane engine like this has a diameter of about 3,2 meters, large enough to fit a small car inside. A curious fact is that it can generate enough thrust to move an entire freight train, showcasing the immense power required to keep an airplane in the air. Interesting, isn’t it?
I captured this photograph on a visit to the sound mirrors at Dungeness, Kent, UK. I like how the structure has been slowly enveloped by the wild grass and surrounding bushes over the decades. The mirror is both a relic of historical engineering and a silent monument to an era before radar transformed the skies.
The Dungeness sound mirrors, remnants of an early acoustic defence system designed to alert against enemy aircraft, now stand as silent testaments to pre-WWII ingenuity. More details available on the official RSPB website at www.rspb.org.uk/days-out/reserves/dungeness.
After the hugely successful open day at Inchicore 175 years event which saw the coming together of various traction throughtout the years, it was time to head home.
NI Railways 111 class loco 8112 leads the tripple header with RPSI Locos B141 and No.85 Merlin to Dublin Connolly passing through Drumcondra.
A nice touch with the vintage lanterns.
Photobombing is a the dreaded worry in train photography, alas it worked out alright in this double shot, class leader 071 operates a wagon transfer from Inchicore while the newish weedsprayer heads out of North Wall for some gardening.
Its all go at North Wall, Dublin 3
Irish Rail class 071 General Motors retro 071
Irish Rail multi purpose vehicle MPV 790
Let's go #RetroTrain
the eiffel tower, an iron giant reaching for the clouds, reveals both its strength and grace when viewed from below. this angle celebrates not only the scale but the delicacy of its latticework, like a piece of intricate lace set against the sky. capturing paris from this perspective gives new life to the cityâs most iconic symbol.
An engineering marvel on Grandfather Mountain on the Blue Ridge Parkway, North Carolina. Autumn colors were
beautiful but short-lived.
This macro stack focus panorama of an Illinois Watch Company pocket watch is comprised of seventeen separate shots (and three attempts).
its the main entrance to bunch of ruined temples........the frame of this entrance is made out of single rock......it must be 15 feet in ht.....I jus kept staring at it...when I first saw.....appreciating the engineers who have build it.....in the age where there were no cranes n sophisticated machines to assist them
The Diving Bell, designed by Bindon Blood Stoney (1828 to 1907) , lovingly restored & recently refurbished, stands proudly illuminating Sir John Rogersons Quay, a remarkable feet of engineering during the Victorian era & used extensively in Dublin Port excavating the seabed.
Its only right that it now stands tall on Sir John Rogerson's Quay, which was constructed under the supervision of Bindon Blood Stoney, along with O'Connell Bridge.
A Ponte Ferroviária Internacional do Águeda, inaugurada em 1887, atravessa o rio homónimo na fronteira luso-espanhola, marcando o final do percurso pedestre "Camino de Hierro". Integrada na antiga linha férrea que ligava Barca d'Alva a La Fregeneda, esta ponte metálica com cerca de 150 metros desempenhou um papel crucial na ligação ferroviária entre o Porto e Salamanca. O troço, desativado em 1985 e reabilitado como percurso pedestre em 2021, estende-se por 17 quilómetros, caracterizando-se pela audaz engenharia da época – com 20 túneis e 10 pontes – e pela sua inserção no Parque Natural das Arribas do Douro. O "Camino de Hierro" proporciona uma experiência imersiva no património ferroviário e na paisagem vinícola da região, oferecendo aos visitantes uma perspetiva única sobre esta histórica ligação entre Portugal e Espanha.
The Águeda International Railway Bridge, inaugurated in 1887, crosses the river of the same name on the Portuguese-Spanish border, marking the end of the “Camino de Hierro” walking route. Part of the old railway line that connected Barca d'Alva to La Fregeneda, this 150-meter metal bridge played a crucial role in the railway connection between Porto and Salamanca. The section, decommissioned in 1985 and rehabilitated as a walking route in 2021, stretches for 17 kilometers and is characterized by the bold engineering of the time—with 20 tunnels and 10 bridges—and its location in the Arribas do Douro Natural Park. The “Camino de Hierro” provides an immersive experience of the region's railway heritage and wine-growing landscape, offering visitors a unique perspective on this historic link between Portugal and Spain.
This image was taken through a Swiss microscope using an iPhone. This is a small segment of a dime-sized, Swiss made woman’s mechanical watch.
San Franciscans have strong opinions about just about everything, especially their iconic landmark. One thing they can all agree on? It’s a good thing the Navy didn’t get their way when it came to the bridge’s design. Naval officials wanted a massive concrete span with caution-yellow stripes, but thankfully, the elegant Art Deco design by architects Gertrude and Irving Murrow and engineer Joseph B. Strauss won out. And the rest, as they say, is history! – San Francisco, CA, USA
Image taken from iPhone looking through the lens of a Swiss microscope of a dime-sized mechanical Hamilton watch.
Rain Vortex, the world's tallest indoor waterfall at 40 metres high and the nucleus of Jewel Changi Airport.
The latest engineering marvel in Singapore situated at the centre of Changi Airport
IG: kevinliuphotography
To view more (one of a kind) award winning pieces, visit www.khsimages.com
Benjamin Franklin Bridge | PA/NJ | PA | US
About the bridge:
The Benjamin Franklin Bridge, originally named the Delaware River Bridge, is a suspension bridge across the Delaware River connecting Philadelphia, Pennsylvania, and Camden, New Jersey.
Work began on January 6, 1922. At the peak of construction, 15 of the 1,300 workers died during its construction. The bridge opened to traffic on July 1, 1926 on the nation’s 150th anniversary. At completion, its 1,750-foot (533-meter) span was the world's longest for a suspension bridge, a distinction it held until the opening of the Ambassador Bridge in 1929.
The name was changed to "Benjamin Franklin Bridge" in 1955, as a second Delaware River suspension bridge connecting Philadelphia and New Jersey was under construction (Walt Whitman Bridge).
Total length: 2,917.86 meters (9,573 feet)
Clearance above: 5.12 meters (16.8 feet)
Clearance below: 41.19
Rocketdyne produced seven serialized high-fidelity F-1 engine mock-ups. Although non-functional, they were used for early engineering purposes. Most are/were? mounted on test (i.e., non-flight) Saturn V first stages.
In this photograph, the second of these, FM-101 (the first being FM-100), was featured in a paper written by D. E. Aldrich & D. J. Sanchini of the Rocketdyne Division of North American Aviation. See:
heroicrelics.org/info/f-1/fm-101/fm-101.jpg
“I don't know exactly when FM-101 (or any of these engine mock-ups) were manufactured, but they certainly reflect an early design:
- There is no provision for thermal insulation.
- There is no interface panel.
- The fuel high-pressure ducts are straight, rather than the "U"-shaped ducts which characterized later production engines.
- The LOX dome has twin-elbow inlets.
F-1 engine mock-up FM-103 is on display in the Kennedy Space Center Rocket Garden (where, oddly enough, it is completely painted silver).”
The direct copy/paste above is in quotations, along with my paraphrasing from Mike Jetzer’s superlative “HEROIC RELICS” website, which he gleaned from Alan Lawrie’s book “Saturn” and a paper, “Saturn V Booster – The F-1 Engine”, by D. E. Aldrich, located in the Saturn V Collection, Dept. of Archives/Special Collections, M. Louis Salmon Library, University of Alabama in Huntsville, at:
heroicrelics.org/info/f-1/fm-101.html
I’m hoping the above is no longer the case, and that FM-103 was moved out of the elements into the Apollo/Saturn V Center.
Or:
evergreene.com/projects/ksc-f-1-engine-prototype/
Credit: EVERGREENE Architectural Arts website
As if the above wasn't enough, see/read also...wow:
heroicrelics.org/info/f-1/f-1-config-changes.html
Also credit: Mike Jetzer/"HEROIC RELICS" website
Wait…one more. Look at the multiple monstrous card catalog cabinets behind the F-1! Commensurate with the size of the the engine.
On this hazy April afternoon just north of Buffalo, the Grand Island Bridge stretches over the Niagara River—one of the few rivers on Earth that flows north. Like Anubis guiding souls up the eternal current, these waters surge relentlessly toward Niagara Falls, undeterred by ice or season. Time, like this river, waits for no one—it only moves forward, carrying all things with it.
O Túnel de las Almas, em La Fregeneda (Espanha), é um dos 20 túneis que compõem o "Camino de Hierro", percurso pedestre de 17 km que segue o traçado da antiga Linha do Douro, entre La Fregeneda e Vega Terrón, na província de Salamanca. Esta linha ferroviária, em funcionamento entre 1887 e 1985 (embora a construção tenha começado em 1863), resultou de um esforço conjunto entre Portugal e Espanha para facilitar o transporte ferroviário internacional, vencendo o relevo acidentado da região fronteiriça através de uma impressionante obra de engenharia: 20 túneis escavados na rocha e revestidos com alvenaria em arco, e 10 pontes metálicas. Declarado Bem de Interesse Cultural, o percurso, que integra também a Rota dos Túneis e Pontes da Linha do Douro, ligando Salamanca a Barca d'Alva, permite aos visitantes atravessar túneis como o de las Almas, com as suas paredes de pedra em arco e trilhos de ferro sobre dormentes de madeira, e apreciar a engenharia ferroviária do século XIX, acompanhando o rio Águeda até à sua foz no Douro.
The Túnel de las Almas, in La Fregeneda (Spain), is one of the 20 tunnels that make up the “Camino de Hierro”, a 17 km walking route that follows the route of the old Douro Line, between La Fregeneda and Vega Terrón, in the province of Salamanca. This railway line, in operation between 1887 and 1985 (although construction began in 1863), was the result of a joint effort between Portugal and Spain to facilitate international rail transport, overcoming the rugged terrain of the border region through an impressive feat of engineering: 20 tunnels dug into the rock and lined with arched masonry, and 10 metal bridges. Declared an Asset of Cultural Interest, the route, which is also part of the Route of the Tunnels and Bridges of the Douro Line, linking Salamanca to Barca d'Alva, allows visitors to pass through tunnels such as that of las Almas, with its arched stone walls and iron rails on wooden sleepers, and appreciate 19th century railway engineering, following the river Águeda to its mouth on the Douro.
Ponte Miguel Torga, uma obra de engenharia significativa que liga Peso da Régua à margem oposta do rio Douro, concluída em 1997. Com uma extensão de 900 metros e uma altura de 90 metros, esta ponte rodoviária é parte do viaduto da autoestrada A24, projetada pelo engenheiro Armando Rito. Destaca-se pela sua forma curvilínea e pela integração harmoniosa na paisagem dos socalcos vinhateiros, considerados Património Mundial da UNESCO desde 2001. Esta região vitícola, conhecida pela produção do Vinho do Porto, é caracterizada por socalcos construídos ao longo dos séculos para maximizar o cultivo em terreno montanhoso. A ponte, que homenageia o escritor Miguel Torga, desempenha um papel crucial na mobilidade e conectividade da região, cruzando um território de difícil acesso até ao século XX. Em 1997, recebeu o Prémio de Engenharia da I Bienal Ibero-Americana de Engenharia e Arquitetura pela sua inovação e dificuldade tecnológica.
“The first flight test of the Apollo/Saturn V space vehicle is being prepared for launching from the National Aeronautics and Space Administration’s John F. Kennedy Space Center, Fla., Complex 39A. The mission is designated Apollo 4. The Apollo/Saturn V is the most powerful space vehicle developed in the United States space program. It is 363 feet tall and its first-stage engines produce 7,500,00 pounds of thrust at liftoff. Weight fully fueled is 6,220,025 pounds. The Saturn V launch vehicle will place 278,699 pounds in a 101-nautical-mile (117-statute mile) Earth orbit. The command module will reenter the atmosphere, land, and be recovered in the Pacific Ocean about 622 miles northwest of Hawaii. Objectives of the Earth-orbital unmanned mission are to obtain flight information on launch vehicle and spacecraft structural integrity and compatibility, flight loads, stage separation, subsystem operation, emergency detection subsystem operation and to evaluate the Apollo command module (CM) heat shield under conditions encountered on return from a Moon mission.”
A rarely seen perspective, of any Saturn V, depicting either rollout/rollback of the Mobile Service Structure (MSS). Either activity meriting the gentleman documenting it with his tripod-mounted 16mm?/35mm? motion picture camera. He may be a contractor, although I can’t identify the lettering or logo on the back of his jacket. Looks to be a capital 'R", and the third letter possibly a lowercase 'c', which would suggest Rocketdyne; however, that would've been all caps, and that's not the Rocketdyne logo on the left. Finally, the fact he’s wearing a jacket/windbreaker may support it being MSS rollback.
All of that, during the first “all-up” test of the entire rocket that was to safely launch humans, with the goal of landing – also safely – on the moon. And then, returning the crew – safely – back to the earth.
THIS PHOTOGRAPH & MACHINES IS/ARE FROM LATE 1967.
I SAY AGAIN, 1967.
Where were you in 1967?
‘WERE’ you in 1967?
I’m guessing most of you ‘were NOT’.
www.nasa.gov/feature/55-years-ago-apollo-4-the-first-flig...