The Castillo de San Sebastián in Cádiz commands a strategic location on a small island at the end of La Caleta beach, with roots tracing to a 1457 chapel built by Venetian sailors. The fortress received its major defensive upgrade in 1706 during Spain-Portugal tensions, when a full castle was constructed to protect Cádiz's northern flank. A distinctive iron-structured lighthouse, erected in 1907 atop a Moorish watchtower and the second electric lighthouse in Spain, crowns the castle's ramparts. Accessible via the Paseo Fernando Quinones walkway, the castle offers panoramic bay views and has served as a cinematic backdrop for Hollywood productions and James Bond films.
