For 4 years, close to Guareña, researchers of the Institute of Archaeology of the CSIC have been excavating one of the vestiges left by the Tartessos, The Turuñuelo. With only 10 percent of its surface discovered, it is already known that it is a unique building on the Iberian Peninsula, measuring more than 6 metres tall, with two floors connected through a single stairway. Measuring more than 3 metres tall with 11 stairs, some coated in slate, others made of lime mortar and clay. The building was abandoned in the 5th century BC, after it was covered in clay by its inhabitants and burnt down. It could be a palace, shrine or a tomb.