Bidston observatory

Bidston Observatory was built in 1866 using local sandstone excavated from the site. One of its functions was to establish the exact time. Up to 18 July 1969, at exactly 1:00 p.m. each day, the 'One O'Clock Gun' overlooking the River Mersey near Morpeth Dock, Birkenhead, would be fired electrically from the Observatory.

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