Explore the Castillo de San Marcos after dark with a guided paranormal investigation that combines historical context with hands-on use of EMF meters and spirit boxes. This exterior-only tour visits the fort grounds, redoubt, city gates, and Huguenot Cemetery over about two hours.
Explore the Castillo de San Marcos after dark with a guided paranormal investigation that combines historical context with hands-on use of EMF meters and spirit boxes. This exterior-only tour visits the fort grounds, redoubt, city gates, and Huguenot Cemetery over about two hours.
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Operated by Ghost Tours of St. Augustine · St. Augustine, Florida
A low tide breeze from Matanzas Bay pushes cold salt air across the plaza as a guide gathers a small group beneath the fort's weathered coquina walls. Headlamps cut through the dusk; distant city traffic recedes and the stone seems to listen. This is the start of an exterior-only paranormal investigation on the grounds of Castillo de San Marcos—America's oldest masonry fort—where centuries of military action, medical improvisation, and contested colonial histories have left a visible and, some say, audible past.
easy.
2 hours.
Minimal physical exertion required; participants should be able to stand and walk short distances on uneven surfaces.
No—the program is exterior-only and focuses on the fort grounds, outworks like the Santo Domingo Redoubt, City Gates, and nearby cemetery areas.
No—guides provide shared EMF meters, spirit boxes, and a short tutorial on how to use them during the tour.
Yes—check-in and the tour meet in an accessible location and many exterior surfaces are wheelchair-accessible, but some historic paving may be uneven.
Yes—guests are welcome to bring personal devices and recordings and photography is encouraged as long as you follow the guide's instructions.
Castillo de San Marcos was constructed in coquina by the Spanish beginning in 1672 and is the oldest masonry fort in the continental U.S., reflecting centuries of colonial conflict and shifting sovereignty.
The National Park Service manages the monument—stay on designated paths, avoid climbing on masonry, and follow Leave No Trace principles to protect coastal and historic resources.
Ghost Tours of St. Augustine operates guided outdoor trips and adventures with an emphasis on safety, stewardship, and memorable experiences.




Book with Ghost Tours of St. Augustine
Book directly with Ghost Tours of St. Augustine for the best rates and real-time scheduling.
Reserve Now