Castell de Saburella stands on a 683-meter hill above the Gaia River in Querol, Alt Camp, representing a well-preserved medieval fortress from Catalonia's feudal era. Built after 1193 but before 1229, the castle is documented in Ramon Alemany de Cervelló's 1229 will, which references a chapel to Sant Miquel built beneath the fortress. The Cervelló family held the castle as descendants of Arnulf de Gurb, following patterns of noble land ownership throughout the region. The fortress remains notably intact, particularly one of three semicircular towers standing nearly complete and reaching 9.3 meters tall with two internal chambers and roof structure. Additional circular-tower bases survive in good condition alongside substantial fortress walls. Designated a cultural property of interest in 1985, the castle exemplifies medieval Catalan military architecture positioned strategically to monitor river valleys and regional access routes.