സെന്റ്. അഗസ്റ്റിൻ 's Old Jail was built in 1891 to accommodate the city' s criminals. ധനസഹായം by railroad magnate ഹെൻറി Flagler, the jail was designed to blend in with the rest of the Ancient City ' s കെട്ടിടങ്ങൾ, ഫീച്ചറുകൾ Romanesque Revival-style architecture. In 1954, a year after the ജയിലിൽ അടച്ചു, the property വീണ്ടും ഒരു ചരിത്ര ആകർഷണം. The facility was added to the National Register of Historic Places in 1987.