Fort Pulaski National Monument is located on Cockspur Island between Savannah and Tybee Island, Georgia. It preserves Fort Pulaski, the place where the Union Army successfully tested rifled cannons in 1862, the success of which rendered brick fortifications obsolete. The fort was also used as a prisoner-of-war camp.
The national monument includes most of Cockspur Island (containing the fort) and all of the adjacent McQueens Island.