Castle of Belmonte de Campos, Medieval castle in Belmonte de Campos, Spain

The Castle of Belmonte de Campos is a late-medieval fortress on a small rise in Belmonte de Campos, Palencia. Its rectangular keep, about 20 m tall, has four floors: the second and fourth lost their wooden floors resting on segmental arches, a barrel vault separates floors two and three, and a ribbed vault covers the top floor, where a Renaissance balcony sits on a large stone corbel. Four corner turrets with spiral staircases rise from the fourth floor.

The castle was rebuilt around the mid-15th century by Juan Manuel, Marquis of Villena. It later passed to the Manrique family, then to the Count of Oñate and the Marquis of Montealegre. Some authors attribute the oldest part to Gómez de Isla, citing similarities with his works at Fuensaldaña and Peñafiel. It was declared a Monumento Histórico-Artístico on 3 June 1931.

The castle's oldest section is attributed to Gómez de Isla, based on its resemblance to his works at Fuensaldaña and Peñafiel. A Renaissance balcony rests on a large stone corbel above the tower's vaulted top floor, added after the tower itself. Four corner turrets rise from the fourth floor, each holding a spiral staircase with no central pillar.

The castle stands on a small rise in Belmonte de Campos and is undergoing rehabilitation under architect Fernando Cobos, so parts of the tower and the irregular enclosure may be closed off or fenced. The municipality acquired half the property in September 2017, giving it legal capacity to carry out improvement works. Check locally before travelling, as access is not guaranteed.

Local residents purchased the grounds in the late 1800s and repurposed the structure as a dovecote and quarry for construction stone. This later reuse reveals how fortifications eventually became practical resources for nearby communities.