The Fuerte de la Concepción () was a Spanish military fortress guarding the port and town of Aguadilla, Puerto Rico, in the 18th and 19th centuries. In 1986, the fort's single surviving building was listed on the U.S. National Register of Historic Places. See also National Register of Historic Places listings in Aguadilla, Puerto Rico Fuerte de San José Notes References External links Blog post about the fort Forts in Puerto Rico National Register of Historic Places in Aguadilla, Puerto Rico Forts on the National Register of Historic Places 1880 establishments in Puerto Rico Government buildings on the National Register of Historic Places in Puerto Rico Government buildings completed in 1880