Spectacular Fort Tryon Park, in the Washington Heights neighborhood of Upper Manhattan, is a New York City Scenic Landmark listed on the U.S. National Register of Historic Places. With expansive views of the Hudson River, the 67-acre park was an important site of the Revolutionary War Battle of Fort Washington on November 16, 1776, in which British and Hessian soldiers attacked smaller American forces. The park, which opened in 1935, contains The Cloisters, a branch of the Metropolitan Museum of Art housing the Unicorn Tapestries and other medieval artworks. Fort Tryon Park abounds with wildlife, including red-tailed and other hawk species, visiting bald eagles, hummingbirds, songbirds, skunks, groundhogs, raccoons, garter snakes and the occasional coyote. Insect species include tiger, pipevine, black swallowtail, monarch and red admiral butterflies, and the hummingbird moth and praying mantis. A 2012 survey of tweets and emoticons found that Fort Tryon Park is the “Happiest Spot in Manhattan."