Castillo de la Alameda

The Castillo de la Alameda is a medieval fortress in Madrid's Alameda de Osuna district and one of the few surviving fortifications of its kind within the city limits. The structure was built in the 15th century, probably at the behest of Diego Hurtado de Mendoza, to symbolize his authority over the region. The complex originally stood in the middle of a typical oak forest and at times served as a refuge for political dissidents. In the 16th century, under the first Count of Barajas, the fortress was transformed into a Renaissance palace with a magnificent garden and a new main tower. Over the centuries, the castle hosted historical figures, including the Duke of Alba and Queen Margaret of Austria, before it was severely damaged by a fire in 1697. In the years that followed, the building steadily deteriorated, and its stones were carted off for other construction projects, leaving it a half-ruin.

Today the Castillo de la Alameda stands as a partially restored cultural monument, managed by Madrid City Hall and affiliated with the Museum of the Origins. Its architecture is defined by a rectangular floor plan with rounded corners, and only two towers survive: a square one in the northwest and a cylindrical one in the opposite corner. Archaeological digs in the surrounding area have uncovered traces of settlement from the Bronze Age through the Roman era, underscoring the site's long history of habitation. You can tour the building and, in the museum that has been open since 2010, explore the historical development of the complex as well as the finds from the excavations. The site is considered an important witness to Madrid's medieval and early modern history and offers insight into the military and social function of such seats of power.