La Caleta is the small bay on the north-west edge of Cádiz's old town, and it is closed at each end by a fortress: the Castillo de Santa Catalina on one side and the Castillo de San Sebastián on the other. Between them lies about 450 metres of golden sand, a palm-lined promenade and water that stays calm enough for an easy swim. It is an urban beach in the full sense: the apartment blocks and the old walls are right behind you, and the Atlantic is right in front.
The bay is far older than the postcard. Archaeologists treat La Caleta as a key location for understanding how the Phoenician city of Gadir related to the ocean, with a channel that linked the settlement to open water. Two sanctuaries stood at the western end of the rocky promontories around that channel, and many offerings have been recovered from the area. Nearby, the Yacimiento de Gadir presents almost 3,000 years of history of the first Phoenician traders to settle here. None of this is obvious from the sand, which is part of the appeal: you swim over a very old harbour without a plaque in sight.
The two castles
Santa Catalina came after disaster. Following the Anglo-Dutch assault of 1596, Philip II ordered the engineer Cristóbal de Rojas to build a defensive fortress, by royal decree of 25 October 1597. The chapel and sacristy were added in 1693, the fort later served as a military prison, and the Ministry of Defence stopped using it in 1991. It now works as a cultural venue; a 2024 press report described three rotating exhibition rooms and a permanent display over the sea.
San Sebastián sits on a small islet at the far end of the beach. Work on the castle began in 1706, and a causeway linking the islet to the city was built in 1860. Walking out along it is one of the best short walks in Cádiz, with the surf on both sides and the old town shrinking behind you. The city council lists it open every day from 9:00 until sunset, free, subject to the weather, and lists Santa Catalina at 11:00 to 19:00 in winter and 11:00 to 19:30 in summer.
The Balneario de la Palma
Halfway along the beach stands the Balneario de la Palma, a bathing house built in reinforced concrete on pillars that rest on the sand, in a Modernist style with regionalist touches. Sources disagree on whether it opened in 1926 or 1927, so "the late 1920s" is the safe way to put it. It was declared a Bien de Interés Cultural by royal decree dated 28 December 1990, and a 1997 Junta de Andalucía order assigned it to the Centro de Arqueología Subacuática of the IAPH. Treat it as a landmark to photograph, not a place to order a drink.
Using the beach
The beach has showers, toilets, sunbed and parasol hire, and chiringuitos, and it is easy to reach on foot or by car. It sits within a few minutes of El Pópulo and Santa María, so it slots easily into a day of sightseeing: a morning in the old town, then the sand or the castle walls.
