The recently opened Amager Bakke waste-to-energy resource center in Copenhagen, Denmark, is innovative in more ways than one. Apart from being one of the world’s most-efficient waste-burning energy stations, the plant—also known as Copenhill—has incorporated into its 10,000-square-meter roof a year-round dry ski slope.

Design for the surrounding area also includes the world’s tallest artificial climbing wall, and more than 30 trees. There are no toxic emissions from the plant, so it provides a safe environment for skiing, hiking, and climbing. Opened in January 2019, Copenhill, designed by Bjarke Ingels Group, is a great example of how public infrastructure—specifically WTE plants—can be great neighbors.

Watch it in action.