The Centre Pompidou, currently France's National Museum of Modern Art, led the way for steel and glass buildings in the 70s. Now it leads the way in modern art with the world's second largest showcase of it. Masterpieces include Pablo Picasso's "Parade" and—one of my favorites—Tamara De Lempicka’s "Girl in Green with Gloves."
I went for the museum, but ended up checking out its public library and the view that improved as the escalators rose to the floor of the museum. Before examining the treasure trove inside, I took the time to spot the Eiffel Tower and Sacre Cour (as well as a street entertainer and its gawking audience of kids) from the sprawling terrace encircled in glass.