Everything you need to know about a Panama Canal visit
Panama Canal - Locks | Britannica
Modern Marvels: The Panama Canal Lock System | History - YouTube
The Panama Canal on Twitter: "The new locks will have 3 chambers, water-saving basins, lateral filling and emptying system & rolling gates. http://t.co/95DXkIRoo1" / Twitter
Why You Should Visit the Panama Canal Miraflores Locks - My Flying Leap