Dungeness on Cumberland Island, Georgia, is a ruined mansion that is part of a historic district that was the home of several families significant in American history.

[2]: 54  The first Dungeness house was the legacy of Revolutionary War hero Nathanael Greene, who had acquired 11,000 acres (45 km2) of island land in 1783 in exchange for a bad debt.

In 1800, his widow Catharine Miller (by then remarried) built a four-story tabby mansion over a Timucuan shell mound.

In 1818, Henry “Light-Horse Harry” Lee, a cavalry commander during the Revolutionary War and father of Robert E. Lee, stayed at the house until his death on March 25, 1818, cared for by Greene's daughter Louisa, and was laid to rest in a nearby cemetery with full military honors provided by an American fleet stationed at St. Marys, Georgia.

[5] The main house comprises a portion of the larger historic district, which includes servant's quarters, utility buildings, laundries, cisterns, and a variety of other structures.