Old St. Johns County Jail

The Fountain of Youth Archaeological Park is a privately owned 15-acre (61,000 m2) park in St. Augustine, Florida, located along Hospital Creek, part of the Intracoastal Waterway. It has been touted as the likely 1513 Florida landing site of Spanish explorer Ponce de Leon, although no evidence has been found to substantiate this claim. Recent research by amateur historian Douglas Peck has placed another possible landing site in the vicinity of Melbourne Beach in Brevard County.The park contains a well claimed to be the freshwater source referred to by Antonio de Herrera y Tordesillas in his Historia general de los hechos de los castellanos en las Islas y Tierra Firme del mar Océano and supposedly sought by Ponce de Leon, but there is no supporting evidence. Archaeological excavations made by Dr. Kathleen Deagan on the park's grounds in the 1990s uncovered remains of the first Spanish settlement and its fortifications in St. Augustine.

The Nelmar Terrace Historic District is a U.S. historic district in St. Augustine, Florida. The district is roughly bounded by Hospital Creek on the east, San Marco Ave. on the west, San Carlos Ave. on the south and Milton and Alfred streets on the north.It was added to the National Register of Historic Places on March 28, 2011.

St. Augustine Water Works is a national historic site located at 184 San Marco Avenue, St. Augustine, Florida in St. Johns County. Completed in 1898, in 1928 it was converted to a community center. It was added to the National Register of Historic Places on February 5, 2014.

Mission Nombre de Dios is a Catholic mission founded in 1565 in St. Augustine, Florida, on the west side of Matanzas Bay. It is part of the Diocese of St. Augustine and is likely the oldest extant mission in the continental United States. The National Shrine of Our Lady of La Leche, the oldest shrine in that region, is located on the mission grounds.

The National Shrine of Our Lady of La Leche is a Catholic Marian shrine located at the Nombre de Dios Mission in St. Augustine, Florida. Originally built in 1609 in honor of Our Lady of La Leche—a Marian apparition popular among the Spanish settlers in the area—it is the oldest shrine in the United States. It was elevated to national shrine status in 2019 and received a canonical coronation in 2021.

The Horace Walker House, also known as Castillo Sebastian is a historic home in St. Augustine, Florida built around 1888. It is located at 33 Old Mission Avenue, near the north city gate. On January 30, 1998, it was added to the U.S. National Register of Historic Places. The house was erected using mold-formed concrete blocks, commonly called "artificial stone". Smith was the first to make concrete blocks that used crushed coquina instead of sand, along with Portland cement. In the late 19th century, this type of construction was new but the blocks used display the same characteristics: smooth/rough opposite surfaces, plus iron rods used for structural reinforcement. The two-story, two bedroom, two bath house is one of St. Augustine's smallest examples of Moorish Revival architecture. The flat roof with decorative parapets are typical for the style; as is the front porch with five Tuscan arches—three facing the street. The interior is ornate, with heart of pine floors; the doors and ceilings feature carved wood. The central element is a double staircase with a landing between.The structure was designed by Franklin W. Smith, who also constructed Villa Zorayda, his personal residence in St. Augustine, and the Casa Monica Hotel, which was sold to Henry Flagler.

The North City Historic District is a U.S. historic district in St. Augustine, Florida. The district is bordered by Castillo Dr. north to Old Mission Ave., N. Ponce de Leon Blvd. on the west and San Marco Avenue on the east.It was added to the National Register of Historic Places on October 1, 2009.

The Florida School for the Deaf and the Blind (FSDB) is a state-supported boarding school for deaf and blind children established in 1885, in St. Augustine, Florida, United States.

The Port of St. Augustine is a port facility in the city of St. Augustine, Florida.

The Abbott Tract Historic District is a 33 acres (13 ha) historic district in St. Augustine, Florida. It is bounded by Matanzas Bay, Pine, San Marco, and Shenandoah Avenues. On July 21, 1983, it was added to the U.S. National Register of Historic Places. It contains 124 contributing buildings.It is a 17 block area.The Abbott Tract is a section of historic St. Augustine that dates to 1860 when Lucy Abbott, a young woman in her 20s, arrived in St. Augustine. She began purchasing land north of the Castillo de San Marcos, and by the 1870s, the astute businesswoman owned a large tract of land north of the city. She built nine structures in the area which still stand — the first house dates from 1861 and the last several from between 1885 and 1894. The Abbott Tract saw rapid development until 1904 when 126 houses lined the streets. The area's development was primarily conceived, designed and developed for residential use.

The Fullerwood Park Residential Historic District is a U.S. historic district in St. Augustine, Florida. The district is roughly bounded on the north by Hildreth Drive, the south by Macaris Street, the west by San Marco Avenue and east by Hospital Creek.It was added to the National Register of Historic Places on September 24, 2010.

The St. Augustine Civic Center (also known as the Visitor's Information Center) is a historic site in St. Augustine, Florida. It is located at 10 Castillo Drive. On April 21, 2005, it was added to the U.S. National Register of Historic Places. Though the given address is at 10 Castillo Drive, the actual location is on the southwest corner of West Castillo Drive and South Castillo Drive, the latter of which is part of an overlap of US Business Route 1 and Florida State Road A1A. The Civic Center is next door to the St. Augustine Huguenot Cemetery, and contains a mile-marker for the eastern terminus of the Old Spanish Trail. An intermodal parking garage can be found behind the civic center with a bus loop along West Castillo Drive, and another one extending north from the intersection of Orange Street and Cordova Street.