Eden is a coastal town in the South Coast region of New South Wales, Australia. The town is 478 kilometres (297 mi) south of the state capital Sydney and is the most southerly town in New South Wales, located between Nullica Bay to the south and Calle Calle Bay, the northern reach of Twofold Bay, and built on undulating land adjacent to the third deepest natural harbour in the southern hemisphere, and Snug Cove on its western boundary.