This rare survivor of the mineral spring hotels that dotted the state in the late nineteenth and early twentieth centuries is on a site that in 1854 accommodated a boarding school for girls. The rural community was named for the Castalian Spring in Delphi, Greece. After the Civil War, the community became a summer resort. Relying on guests escaping the miasmas of the Delta, the hotel flourished through the next several decades. The original hotel building burned in 1903 and this two-story wooden building took its place. Turned posts support the peripteral two-tiered gallery, and beadboard clads the walls. Castalian Springs became a church camp in 1915, a YMCA camp in 1949, and a training center for the New Tribes Mission for thirty years; today it is again used for religious retreats.