You will find this museum in the Torre de Doña Ochanda, a 15th century fortified house which formed part of the city's walls in medieval times. The house was reconstructed in the 16th century by Don Andrés Martínez de Iruña who named it after his daughter, doña Ochanda. The first floor of the Museum is given over to the world of geology, including a large number of pieces of amber, many of which contain insect inclusions. The second-floor contains the Museum's botany and zoology sections.