Magic Lantern Glass Picture Phonograph Panama Canal Lock 1933

The Gatún Locks, 10km south of Colón, raise southbound ships 29.5m from Caribbean waters to Lago Gatún. Just the size of them is mind-boggling. In The Path Between the Seas, David McCullough notes that if stood on its end, a single lock would have been the tallest structure on earth at the time it was built, taller by several meters than even the Eiffel Tower. Each chamber could have accommodated the Titanic with room to spare.