Castle of San Sebastián built
1706 CE.
Shown on the map at 36.528°, -6.316°.
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.
Text from the Wikipedia article Castle of San Sebastián, licensed CC BY-SA 4.0.