Copenhagen ski slope

A clean-energy power plant with a rooftop ski run, CopenHill (Vindmøllevej 6; www.copenhill.dk/en), opened in Copenhagen, Denmark, in October 2019.

Skiing is offered year-round, even in summer, using specially engineered plastic and waxed skis. Copenhill has two runs: a beginner course and an advanced. The full 1,300-foot, course-long slope starts about 300 feet high and takes two sharp turns on the way to the bottom of the building.

Open 2-8 p.m. Mon.-Fri., 11 a.m.-8 p.m. Sat. and 11-6 Sun. DKK150 (near $24) per hour. Equipment rentals cost extra.