1 Hotel Central Park

"This 229-room, eco-conscious hotel is designed by AvroKo group and Kemper Hyers. Rooms come with stylish reclaimed wood furniture, recycled cardboard hangers in the closet, hemp Keetsa mattresses topped with organic cotton sheets, and a Google Nexus tablet that tracks your carbon footprint. The clever details don’t end there, either: The floor in the fitness center is actually the old University of Wisconsin basketball court; restrooms feature moss growing on the ceilings; and even the hotel's three-story living-wall exterior is composed of recycled materials and helps to conserve water."