The North Shore of Long Island is the area along the northern coast of New York's Long Island bordering Long Island Sound. Known for its extreme wealth and lavish estates, the North Shore exploded into affluence at the turn of the 20th century, earning it the nickname the Gold Coast. Historically, this term refers to the coastline communities in the towns of North Hempstead and Oyster Bay in Nassau County and the Town of Huntington in Suffolk County, although the town of Smithtown east of here is also known for its affluence. The easternmost Gold Coast mansion is the Geissler Estate, located just west of Indian Hills Country Club in Fort Salonga, within the Town of Huntington.