Much of Sag Harbor is a National Historic Site. Its history centers heavily on its days as a whaling port, although it was inhabited well before Europeans settled here. In the mid-1800s, almost half the total population of Sag Harbor served on whaling ships. Today the town swells with vacationers in the summer drawn by the two beaches (Foster Memorial and Havens Beach), an assortment of restaurants and easy provisioning options. The Sag Harbor Yacht Club hosts a spectacular 4th of July fireworks celebration, which has become a major attraction on the East End of Long Island, annually drawing 20,000 plus spectators.