Ah, the New York skyline. You’ve seen it, you know it, you love it. In his new book, however, photographer and pilot Alex MacLean presents the same landscape from a less familiar angle. Up on the Roof: New York’s Hidden Skyline Spaces ($50 at St. Mark’s Bookshop, 31 Third Ave., nr. 9th St.; 212-260-7853) captures 200 of the city’s most impressive rooftops from hundreds of feet above. Shot by MacLean from a helicopter, the tour flits from the tourist-riddled observation deck of Rockefeller Center to sunbathers lounging atop the Penny Lane building to the graffiti-scrawled 5 Pointz Aerosol Art Center in Long Island City. For further education—and voyeuristic assistance—the book also comes with a map and addresses of every featured rooftop.