If you're going on a trip this summer, you might think about visiting some of the world's great landmarks. Sure, you've seen them in pictures, but wouldn't you love to say you've been there? Before you go, learn some weird and wild stories about those landmarks like the Taj Mahal, Christ the Redeemer, the Sydney Opera House, Big Ben, and even the Mona Lisa from John Green, in the latest episode of the Mental Floss List Show.