Cádiz, ES
The Castle of San Sebastián (Spanish: Castillo de San Sebastián) is a fortress located in Cádiz, Spain, at the end of La Caleta beach on a small island separated from the main city. It was declared Bien de Interés Cultural in 1993.
Listen to the audio guide for Castillo de San Sebastián Free on WIP — starts by itself when you arrive, even with the screen off