Embalse de San Juan
Recommended in June and September, tolerable in July, avoidable on an August Sunday.
Swimming within an hour of Madrid, in a landscape of pines and granite rather than a swimming pool.
At a Glance
- — You want a quiet shore in August
An hour west of Madrid, the Embalse de San Juan is a working reservoir that doubles as the capital's nearest swimming lake, with pine trees down to the water and sandy bays along the shore. It is a reservoir, so the waterline moves through the summer and the beaches change shape with it. In August the car parks fill by mid-morning and the bays fill with families, cool boxes and music. Come in June or September for the same water with far fewer people, and eat in San Martín de Valdeiglesias, which keeps a castle and a plaza worth an hour.
How it got here
Construction of the dam began in 1947 to supply water and electricity to Madrid. This infrastructure project submerged portions of the old bridge at San Martín de Valdeiglesias and altered the course of the Alberche river. The reservoir sits within the Sierra Oeste, a corridor of land bridging the Castilian plateau and the Gredos mountains. While the site itself serves primarily as a modern hydraulic work, it rests on soil belonging to a comarca that grew around the viticulture and defensive outposts established during the medieval repopulation of the frontier between the kingdoms of Castile and Toledo.
Where it sits
Pine forests and rock scrub dominate the slopes of the Sierra Oeste. The reservoir acts as a seasonal trap for the summer heat of the Madrid basin. As the water level drops through July and August, the receding tide leaves exposed stretches of earth and sand. Traffic clogs the narrow access roads during the weekends of the warmest months when residents of the city descend in mass. October through May, the wind off the mountains keeps the shore quiet and the water cold. The landscape feels rugged and dry compared to the manicured parks of the capital.
What to eat and drink
The nearby town of San Martín de Valdeiglesias sits at the heart of a local wine subzone. Patrons order Garnacha, the primary grape variety here, which produces wines with a distinct mineral profile from the granite soils. For food, the menu focuses on the hearty rural cooking of Madrid province. Cocido madrileño, a chickpea stew with pork and chorizo, defines the cold-weather diet. During the summer, restaurants serve pisto, a mixture of fried tomato, pepper, and zucchini, often topped with a fried egg. Roasted suckling pig or lamb prepared in wood-fired ovens serves as the standard main course for weekend lunches.
Madrid: the whole region
Madrid is a province with one great city in it, and that city is worth three or four days on its own: three major museums within a few hundred metres of each other, a working market culture, a nightlife that starts late and does not stop,…
Minimum 3 days · better 5-6 days · deep 8-10 days
What's Nearby
In Madrid
In Madrid
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