Castillo de Butron is a medieval-style castle located in the Basque Country of Spain. It is situated in the town of Gatika, approximately 20 km from the city of Bilbao. The castle was built in the 19th century by a wealthy aristocrat named Francisco de Cubas, who was inspired by the romanticism movement of the time.

The castle is known for its unique architecture, which combines elements of Gothic and Renaissance styles. It features crenellated walls, towers, and turrets, as well as a moat and drawbridge. The interior of the castle is decorated with elaborate carvings, stained glass windows, and ornate furniture.

Throughout its history, the castle has been used for a variety of purposes, including as a military hospital during the Spanish Civil War. In the 1970s, it fell into a state of disrepair and was abandoned. However, it was later purchased by a private owner who restored it to its former glory and opened it up to the public.

Today, the castle is a popular tourist attraction and is often used as a venue for weddings and other special events. Visitors can take guided tours of the castle's interior and explore the surrounding gardens and grounds.