Fundación de San Juan del Puerto Historical milestone · San Juan del Puerto, Comarca Metropolitana de Huelva, Huelva Image of San Juan del Puerto, not of the place itself. The town was founded by a settlement charter granted by the House of Medina Sidonia on 10 January 1468; in 1551 it was raised from a hamlet to a villa. 10 de enero de 1468 Photo: Unknown author (Public domain) What to see and do in San Juan del Puerto