Is it urban glamping? A concrete treehouse? Actually, it’s the 1 Hotel, and all of the above. The hotel is as close to nature you’re going to get without camping out in Central Park. Outside, a three-story living wall. Inside, 24,000 living plants plus twigs and reclaimed wood worked into the design. Morning strolls at the park, afternoon shopping in 5th Avenue and Columbus Circle, evenings at the theater, and an enchanted forest to return to.