The original building was built in the 16th century by the Suárez de la Concha family, lords of the burg. At the end of the 18th century it was ruined and the building was rebuilt by the fourth Marquis of Lozoya. It lies on an extended plot, fenced by a quite high masonry wall. It is a three floor irregular construction, with rather square proportions. It is whitewashing masonry and brick built, with stone framing at the main façade hollows and ashlars chains at the corners.
Its origin is in the 16th century; being difficult to precisely date it due to the lack of historic documents nowadays available. The actual appearance is very different from the one at the 16th century, the forced repairs started in the 18th century due to a fire. It has three naves separated by pillars supporting round arches, a Gothic vault and a two bodied tower. The most remarkable elements of the construction are the Sacristy Renaissance window, and mainly the east side Plateresque façade. It is a Toledo type façade, in relation with the Covarrubias School.
Built in the 18th century, it was destroyed during the Spanish Civil War and later on rebuilt. It is masonry made and exposed ashlars plastered.
It is located downriver the Pinilla reservoir, in a dirt road which connects Lozoya and Garganta de los Montes. It rises on a narrow and deep gorge surrounded by an awesome landscape. It was built in the 12th century with a very rough masonry cemented on the rock. It presents a 6m span with a round vault.
It is a rather neoclassic drinking fountain dated in 1791. It shows two bronze paired pipes adjoining the laterals of a stone pond. The jets are granite made and have a pyramidal base. Traditionally it has been used as a cattle trough.
A “rollo” is a stone column crowned by a cross or a ball which was raised in the burgs with full jurisdiction, indicating the regime they were subjected to: lordship, monastic etc. In certain cases it was as well the commemorative monument of the burg concession or even it indicated the limits of the territory.
In February 2012 the Lozoya “rollo” returned to its original place at Juan Martín Street behind the Town Hall, after many years forgotten at the old cemetery