Buitrago del Lozoya (Spanish pronunciation: [bwiˈtɾaɣo ðel loˈθoʝa]) is a municipality of the autonomous community of Madrid in central Spain.

The first edition of the Belén Viviente involved eighty actors, with four thousand people watching the scenes.

In Currently, the el Belén Viviente in Buitrago del Lozoya (el Belén viviente de Buitrago del Lozoya) is one of the most important event in Spain, with 39 scenes spread across a 1,300-meter route with over 200 actors, 15 technicians and 35 security officiers joining the event.

Given the great feedback received since its first edition (attracting over 30,000 visitors every year), it has become one of the most important event in the Community of Madrid.

The fair includes a large market with over 100 stalls in addition to numerous activities like theater, music, dance and parade.