Fort Zachary Taylor

Construction on this Civil War-era fort began in 1845 as part of a coastal defense network, slowed for years by yellow fever epidemics and material shortages among the workers. A ghost locals call Wendell, believed to have died of yellow fever here during the war, has reportedly appeared in several photographs taken at the fort over the years — in one widely repeated account, staff confirmed a sighting when the man's own relatives visited and recognized him from a photo. The fort, now a National Historic Landmark and state park, hosts an annual haunted-fort event the weekend before Halloween.