It is built on the remains of an ancient Roman tower and was renovated in the 17th century with an architecture of the Catalan Renaissance.

The building, made of well-hewn stone, has several defensive elements, such as the slope, the turrets of the angles, or the central matacán.

The interior of the castle can be visited and is structured in large rooms, including: the cellar, which still preserves the wood for the wine; the armor of the entrance; the grand central staircase; the library and the music room.

In 1919, the barony of Montclar was recognized in favor of Josep M. Despujol i Ricart, Marquis of Palmerola.

Only five families have owned Montclar castle since 1200: the Cabrera, the Ribelles, the Ponts, the Despujols and since 1986, the Miguels.