Castell de Malavella, situated near Caldes de Malavella in the Selva comarca, dates to at least the 11th century when documented as 'Castro Vetulo,' though it may rest upon older Iberian or Roman foundations. Positioned atop a basaltic promontory approximately three kilometers from the urban center, the castle showcases construction from distinctive hexagonal volcanic stone blocks characteristic of the region's geology. Built by the Barony of Llagostera from 1375 onwards, only fragmentary walls with square corner towers survive, though archaeological excavations revealed a rectangular chapel structure within the complex. The castle exemplifies how medieval Catalan fortifications utilized local geological features and materials to create defensible positions across the Selva landscape.