The largest of New Hampshire's lakes is Lake Winnipesaukee, which covers 71 square miles (184 km2) in the east-central part of New Hampshire. Umbagog Lake along the Maine border, approximately 12.3 square miles (31.9 km2), is a distant second. Squam Lake is the second largest lake entirely in New Hampshire.
New Hampshire has the shortest ocean coastline of any state in the United States, approximately 18 miles (29 km) long. Hampton Beach is a popular local summer destination. About 7 miles (11 km) offshore are the Isles of Shoals, nine small islands (four of which are in New Hampshire) known as the site of a 19th-century art colony founded by poet Celia Thaxter, and the alleged location of one of the buried treasures of the pirate Blackbeard.