A timelapse (recorded on April Fools day 2012) of a day’s marine traffic through the Miraflores Locks of the Panama Canal, which turns 100 this month.
You can also watch live footage of the Locks here.
Meanwhile, almost a century ago…
A souvenir postcard from the 1915 Panama Pacific International Exposition in San Francisco.
(H/T: Spaghetti Hoop)