Billund is a small Danish town, famous for being the birthplace of Lego. The interior of these 21 bricks is just as extraordinary. A wide variety of Lego dioramas are on display, including a giant waterfall, three T-Rexes, a lava-filled volcano, and a landscape with mountains and a castle. Perhaps the most impressive arrangement on site is the 55-foot “Tree of Creativity,” the product of 6.3 million Lego bricks and 24,350 hours of labor.