Lynn was settled by colonists from the New England Company in Salem in 1629. Early settlers relied primarily on family farming and shell fishing although an iron works was established in the city in 1643. Lynn, now the largest city in Essex County, is an urban manufacturing and commercial center, densely populated and culturally diverse. Residents are proud of the city's long history, which parallels the history of New England as a whole. It is located in eastern Massachusetts on the northern shore of Massachusetts Bay and is bordered by Saugus and Lynnfield on the west, Peabody and Salem on the north, Swampscott and the Atlantic Ocean on the east, and Nahant and Revere on the south. Lynn is 9 miles north of Boston; 51 miles east of Worcester; 95 miles south of Portland, Maine; and 229 miles from New York City. Boat ramps provide public access to Lynn Harbor. The public can swim at Long Beach and King's Beach. An expansive seascape can be viewed from over four miles of waterfront that is managed under public ownership. A promenade extends along the two-mile length of the two reservations at the edge of Nahant Bay and is available year round for activities such as walking, jogging and bicycling. Vast areas of hard-packed sand are exposed at low tide which can be accessed at King's Beach and Long Beach on Nahant Bay as well as near the boat launching area on Lynn Harbor. Other interesting natural features include a mile-long system of fragile sand dunes parallel to Long Beach, and tide pools at Red Rock Park that are often filled with colorful marine plants and animals.