Economic center of the area, where since 1984 the Mycological Days have been held in November. As an essential visit, the Dinosaur Museum, in the town square, takes us back to the time when these gigantic animals lived. Numerous models, illustrations, reconstructions, archaeological and paleontological pieces make up a tour of great educational value, suitable for all types of ages.

You can see the ruins of its castle and its three magnificent fossil trees, which are over 120 million years old. The urban complex is one of the best preserved in the region.

Burgos reference point to access the Cañón de Río Lobos Natural Park. Vertical cuts without groundcover that fall on the river and whose lush coniferous vegetation contrasts with the bare rock. You can get daily and weekend passes to preserves for the collection of mushrooms in various establishments and municipalities.

The most interesting heritage is the town and necropolis of Cuyacabras, which is in its proximity among lush pine forests. Its main source of income comes from wood, for this reason the Brotherhood of the Real Cabaña de Carreteros, founded by the Catholic Monarchs in 1497, tries to maintain the tradition of life of this dedicated mountain trade to the transport of wood. They make routes with ox-drawn carts, dressed in traditional clothing.

Popular architecture in which several manor houses stand out. Mushrooms and fungi are one of the very valuable resources with those that the town counts. The number of Neilenses and foreigners who find in the collection of mushrooms and fungi is increasing (Autumn season) a reason for leisure, an economic resource and a gastronomic delight.

The Visitor Center is dedicated to the Medieval Necropolis of the Alto Arlanza and consists of three floors through which you will enjoy getting to know an interesting set of ancient cemeteries from more than a thousand years ago that were part of mostly missing villages. The visit lasts about 30 min. where you will know some of the customs of the ways of life of these Christians of the Middle Ages.

The village of which remains of different necropolis in the upper de la Muela, next to the hermitage of Santa Ana, was built on a medieval settlement. Castrillo enjoys a strong and ancestral passion for theater, proof of this is the representation that in the month of August "The legend of Los Infantes de Lara" has been taking place.