They are in the open air, so the tourist can visit it every day and for free. Many of its remains can be found in the Local Archaeological Museum.
Osuna could have one of the best National Museums of Ceramics and Roman glasses, but due to the continuous sackings in these caves, this was not possible.
Some caves are divided in different sections with vaulted ceilings, drilled in the stone and showing bird paintings on the walls. Researches doubt if we are talking about pagan frescos or if they are one of the first examples of paintings making reference to Christianity. However, most of the researchers agree that the caves are from the Paleochristian age. A great number of tombs can be found on the ground.
Nowadays, it is possible to visit the more recent series of tombs, from the Visigothic age. From 1784, when it was first drilled, the space remained abandoned until the last part of the 20th century, when some activities were carried out to highlight its value.