Zero point hollow core
Standing on the glass plate and looking 25m down the hollow core of Rundetaarn, the 17th-century tower located in central Copenhagen. This point was used as the point zero when Denmark was triangulated in the late 1760s by astronomer Thomas Bugge. In 1880 a choirboy named August Nielsen fell all the way down the core while playing hide and seek with his friends. He survived the fall relatively unscathed (he was freed a day later by rescuers who had to breach the thick walls at the base to reach him) and lived to be known as “August Roundtower”.
The glass covering the hole today is more than 5 cm thick and can withstand loads up to 900 kg per square meter.
Zero point hollow core
Standing on the glass plate and looking 25m down the hollow core of Rundetaarn, the 17th-century tower located in central Copenhagen. This point was used as the point zero when Denmark was triangulated in the late 1760s by astronomer Thomas Bugge. In 1880 a choirboy named August Nielsen fell all the way down the core while playing hide and seek with his friends. He survived the fall relatively unscathed (he was freed a day later by rescuers who had to breach the thick walls at the base to reach him) and lived to be known as “August Roundtower”.
The glass covering the hole today is more than 5 cm thick and can withstand loads up to 900 kg per square meter.