The castle and the church are a fortified complex from the 10th c. From the Center for Interpretation different proposals are offered to discover its history
Dating from the 11th century and declared a Bé Cultural d'interès Nacional, it is the most representative medieval monument in the region and the only Romanesque Monastery in the Penedès.
Castellet Castle, built on the remains of fortifications dating back more than 2,500 years, was built in 977 with a basic structure consisting of a watchtower and a small wall.
Founded in the second half of the 10th century, it was part of the county of Barcelona, and was integrated into the network of castles that marked the border between the Catalan counties and Al-Andalus, with the function of protecting and organizing the territory.
Montbui Castle stands on an elevation known as “La Tossa”, the spur of the Queralt mountain range that offers a commanding view of the entire Òdena basin.