The Geominero Museum in Madrid exhibits a rich collection of minerals and rocks. The collection also includes fossils of vertebrates, invertebrates and Spanish flora, as well as meteorites. One of the biggest attractions is the skeleton of mastodon Anancus arvernensis.
Many exhibits were collected during the development of the geological map of Spain, research began in the mid-nineteenth century. The collection is mostly exhibited in the main hall. However, not only he catches the eye. The interior architecture and unusual stained glass windows made by La Casa Maumejean, which is famous for the production of decorative window fillings, are also impressive.
Exhibits were placed in 40 rooms on the area of 2,000 m². The specimens come from Spain and its former colonies. The museum was founded in 1972. Its headquarters is at the Institute of Geology and Minerals. The ceremonial opening took place in 1926, it was attended by King Alfonso XIII.