San Juan National Historic Site

San Juan National Historic Site
Location	San Juan, Puerto Rico
Coordinates	18°28′3″N 66°6′37″W / 18.46750°N 66.11028°W / 18.46750; -66.11028
Area	75.13 acres (30.40 ha) 53.20 acres (21.53 ha) federal
Established	February 14, 1949
Visitors	1,027,264 (in 2022)[1]
Governing body	National Park Service
Website	San Juan National Historic Site
UNESCO World Heritage Site
Criteria	Cultural: (vi)
Designated	1983 (7th session)
Part of	La Fortaleza and San Juan National Historic Site in Puerto Rico
Reference no.	266bis-001
Extensions	2016
U.S. National Register of Historic Places
Designated	October 15, 1966
Reference no.	66000930[2]

San Juan National Historic Site (Spanish: Sitio Histórico Nacional de San Juan) in the Old San Juan section of San Juan, Puerto Rico, is a National Park Service-managed historic site which preserves and interprets the Spanish colonial-era fortification system of the city of San Juan, and features structures such as the San Felipe del Morro and San Cristóbal fortresses.^[3] This fortification system is the oldest European construction under United States jurisdiction and one of the oldest in the New World.^[4] This national historic site, together with La Fortaleza, have been designated a UNESCO World Heritage Site since 1983.^[5]