Regiments and 25 members of the Creek Indian Volunteers. During the summer, the fort was abandoned due to reductions in hostilities and an increase of disease among its forces, aka, the sickly season. Fort Foster was reactivated in the fall of 1837 to the summer 1838 to act as a supply post. Then it remained abandoned until 1841-1842, and again in 1849 when it only opened for short periods to meet the needs of the military when Seminole activity threatened. The fort site was added to the U.S. National Register of Historic Places on June 13, 1972. The fort was reconstructed on the site by the state and opened to the public in February 1980. It is owned and operated by the Florida State Park system as Fort Foster State Historic Site, a part of Hillsborough River State Park. References Gallery External links Fort Foster State Historic Site, Official Website Hillsborough County listings, National Register of Historic Places Hillsborough County listings, Florida's Office of Cultural and Historical Programs "Fort Foster Historic State Park", Florida Parks "Fort Foster State Historic Site", Wildernet Fort Foster, The Florida Frontiersman Florida Seminole Wars Heritage Trail. State parks of Florida Foster National Register of Historic Places in Hillsborough County, Florida Museums in Hillsborough County, Florida Military and war museums in Florida Native American museums in Florida Protected areas established in 1972 Parks in Hillsborough County, Florida Florida Native American Heritage Trail 1972 establishments in Florida Second Seminole War fortifications