Just 10 minutes from this town you can visit the archaeological site of the city of Tiermes; and next to it the Romanesque porticoed chapel of Santa María tells us about the continuity of the human settlement in this place.

Between the lands of La Ribera and El Burgo in the south of the province, bordering the neighbouring Castile-La Mancha region, the municipality of Montejo de Tiermes has a good number of adjoining districts, some of them with important testimonies of the Natural and Cultural Heritage of the area.

But let us begin with Montejo, a village that distributed its stone houses in line, flanking what was once the main street along which ran the road that communicated this locality with the surrounding areas.

If we go into this street we will find a beautiful church dedicated to Saints Cornelius and Cyprian with Renaissance access to the atrium and a Romanesque porticoed gallery with four arcades surrounding the entrance; two arches are open and the other two are blinded.

Within the urban area there is a dovecote that recalls a part of the economic past when, as now, livestock and agriculture were the main activities of the "montejanos" or perhaps "termestinos" due to the proximity of the city of Termes.

At the fall of the Ancien Régime, the locality became a constitutional municipality, then known as Montejo, in the region of Castilla la Vieja, in the district of El Burgo de Osma , which in the 1842 census had 66 households and 270 inhabitants.

Of special relevance are the Astronomy Days (AstroTiermes), which each year bring together around three hundred amateurs and professionals in the vicinity of the Celtiberian and Roman site of Tiermes, in a type of tourism known as astro-tourism which seeks the quality of the night skies.