The original Calvario hermitage, built during the first half of the 17th century, was a small church on the outskirts of Montalbán, near the old castle ruins.

The work was completed in July 1856, and the image of Nuestro Padre Jesús del Calvario was returned to the new chapel on August 25, upon which the village celebrated with the ringing of bells, illuminations, temporary triumphal arches, and buntings hung on edifices.

The building is decorated in Neoclassical style; its exterior is rather plainly finished in white stucco, while the dome and roof lantern cupola are tiled.

The church is consecrated to Nuestro Padre Jesús del Calvario (Our Father Jesus of Calvary); his image is in the altarpiece, which is worked in the Sevillian style.

The dedication of the new chapel was given by Major Master Ecija, D. Corrales Jose Martinez, who explained its relationship to the architecture of Seville.

The building has been maintained in recent years by minor works such as the paving of the courtyard entrance, roof-work and the restoration of the guesthouse and the House of the Santeros.

The interior has a small altar dedicated to the Immaculate Conception, a baroque altarpiece and ruins of the old church, which was demolished in 1964.

Cultural activities including lectures and social gatherings, public and official ceremonies, and general presentations take place here.

In 1980, an association was founded for its preservation, as the Mesto had long served as an inspiration to poets, writers and artists, arousing a special sensibility of appreciation for the beauty of nature.

The Mesto was destroyed in the summer of 1995; yet it remains a symbol, and evokes a feeling for this beauty and a memory of something deeply meaningful being lost.

The fair is celebrated during August 6–8, in honour of Nuestro Padre Jesús del Calvario; this is harvest time for area farms and the end of the season for agriculture generally.