In the world of man-made parks, few can rival the beauty of Moerenuma Park in Sapporo. Artist Isamu Noguchi designed the park as one huge sculpture, built on the site of a waste treatment plant. Vast areas of green space are broken up by amazing geometric play structures, water features and even a 100m hill that is used for sledding during the snowy Hokkaido winters. Hidamari, the prominent glass pyramid, is a public space containing a small Noguchi museum, restaurant and workshop space. It is kept cool during the summer using a unique air conditioning system run using snow stored from the winter months.