Fort Pickens is described as a haunted site due to its long history, with visitors reporting eerie feelings, phantom whispers, and the presence of orbs, possibly connected to Union soldiers and Native Americans. People often feel strong emotions near the site of a 1899 powder magazine explosion and report hearing faint conversations, which some attribute to the spirits of past inhabitants. While the specific nature of the hauntings is debated, the fort's historical significance, combined with its atmospheric tunnels and chambers, contributes to its reputation as a potentially haunted location. Visitors have reported hearing whispers, phantom conversations, and strange murmuring sounds within the fort, leading some to believe spirits are still present. Some individuals experience waves of fear or strong emotions, particularly near a wall that was destroyed in an 1899 explosion. Some accounts describe seeing orbs, which are sometimes interpreted as paranormal activity or a ghostly greeting. The presence of Union soldiers is sometimes mentioned, with some believing their spirits remain on duty.