Lake Shikotsu, near the city of Chitose in Hokkaido, is one of Japan’s largest. Formed in an ancient volcanic caldera, it is deep enough to contain Tokyo Tower beneath its surface. Through the month of February, water from the lake is sprayed to create enormous ice sculptures in the nearby park, which are then illuminated in bright colors. There are also many hot springs and other snow resorts in the area, making the event very popular as a winter holiday spot.