Celebrate July 4th in a unit of the National Park System! You may not see any man-made fireworks, but if it's a clear night, then stay up past your bedtime and enjoy the sparkling stars.
Built by the Spanish in St. Augustine to defend Florida and the Atlantic trade route, Castillo de San Marcos National Monument preserves the oldest masonry fortification in the continental United States and interprets more than 450 years of cultural intersections.