[2] [3] It is located in the hydrographic plateau of the rivers Tagus and Tajuña, at 40º 07' 00" north and 5º 47' 30" east, in the region of La Alcarria de Chinchón.

Located 50 km from Madrid capital city, Colmenar de Oreja is presently only accessible by road, since its former railway station and connection does not exist anymore.

Around the fort several villages emerged, one of them, dedicated to apiculture, was Apis Aureliae (latin name for Apiary of Aurelio), later in Spanish, Colmenar de Oreja.

The region of La Vega is cited by historians Polybius and Livy in their description of the Tagus Battle in 220 BC, when 100000 Carpetani, Olcades and Vaccaei were defeated by Carthaginian general Hannibal.

Between 1500 and 1700, the successive kings of the House of Austria authorised or undertook the most important works carried out in Colmenar de Oreja: extension of the church of Santa María la Mayor (1517), repair of the wall (1517) and irrigation of the Vega (1572), foundation of the Franciscan Monastery of San Bernardino de Siena.

In 1922, Alfonso XIII of Spain granted the Title of City to Colmenar de Oreja as a reward for the many merits it had acquired throughout its history, coinciding with the prosperity of its industry and the strength of its agriculture.

In 1891 there were only 10 left in active production, which is now reduced to one (Cooperativa Aceite Santo Cristo), managed in the form of cooperative by the local farmers and oil producers themselves.