Marion Square is a small public park in downtown Charleston, South Carolina, United States. The ten-acre square was established as a parade ground for the state arsenal under construction on the squar
Marion Square looking northeast, with the Old Citadel (left) and the L. Mendel Rivers Federal Building (right) in the background
In this 1865 photo of the original Citadel building, a remnant of the city's defensive wall, known as a horn work, is visible in the foreground; the horn work is still in place in 2025 surrounded by a low iron fence.