Wave Hill, The Bronx
It's mind-blowing that this plush 28-acre municipal garden and cultural center overlooking the Hudson River and Palisades is actually within the five boroughs. It was once part of a private estate (visited by the likes of Mark Twain and Theodore Roosevelt), and from its sweeping vistas to its dreamy on-site architecture, it has certainly retained its grandeur. Be sure to book your tickets before visiting!
Wave Hill, 4900 Independence Avenue, Bronx
[Photo via @onehappyysoul]