Since 2001, Stationsplein at Amsterdam's Central Station boasts the world's first bicycle flat. The building has room for 2500 bicycles, and the top level offers a beautiful view of the surrounding area.
The 100 metre long bicycle flat was built to temporarily store thousands of bikes during a large renovation project at Central Station. The three slightly sloping parking decks were built over water to maximize the use of space. The bicycle flat was supposed to be dismantled and closed in 2004, but it still exists today.