LEGOLAND Dubai just unveiled the tallest LEGO building in the world: a 55-foot-tall Burj Khalifa. The towering LEGO building, finished with the help of five-year-old Mohammed bin Ahmed Jaber Al Harbi, paves the way for the opening of the theme park the end of October. The lofty LEGO building required 439,000 bricks. Located in MINILAND, the LEGO Burj Khalifa smashed records.