One of the world's tallest clock towers, this Polish clock sits on top of the 750-foot building. The hands are nearly 20 feet long, making it possible to tell the time from a great distance. Actually, the clock was added in 2000, much later than the communist-era building, which was finished in the late 1950s. Until Tokyo's NTT DoCoMo Yoyogi Building and the Abraj Al-Bait clock tower were built, this was the tallest clock tower in the world. The building remains the most prominent part of the Warsaw skyline. Though it was originally named for Joseph Stalin, the name was changed and Stalin's statues and communist artwork were removed during Poland's transition to democracy.