City Island is located at the extreme western end of Long Island Sound, south of Pelham Bay and east of Eastchester Bay. The body of water between City Island and the even smaller (and uninhabited) Hart Island to the east is known as City Island Harbor. The small island adjacent to the northeast is High Island. Stepping Stones Lighthouse, marking the main shipping channel into New York, is off the southern tip of the island, near the Long Island shore. Bus transportation consists of the Bx29 local bus to Bay Plaza via the Pelham Bay Park subway station and the two rush-hour extended roundtrips of the BxM8 express bus to Manhattan, both run by the MTA.