Colmenar Viejo is a town north of Madrid, terminus of the C4 train line that passes by Tres Cantos.
It boasts a splendid city center with a pretty Gothic basilica, Nuestra Señora de la Asunción where "Ciconias" perch in a very picturesque way. Sadly, however, Spanish madness with modern urban constructions defaced what used to be a lovely village nestled at the foot of the mountains. Most of what is now a small city is quite ugly. Surroundings remain, however, of stupendous natural beauty and wilderness.