The Leaning Tower of Pisa. The Space Needle. The Sydney Opera House. Ankgor Wat. These and fifty other famous towers, churches, castles, and more impressive edifices hide within the sprawling cityscape on our Buildings of the World Puzzle. This 1,000-piece puzzle measures 20"x27" when complete, and includes an easy-to-use identification guide to all fifty-four iconic landmarks. Assemble the puzzle, then see how many you can find!