Basilica of Santa Eulalia
The Basilica of Santa Eulalia was, according to researchers, the first Christian temple to be built in Hispania after the peace of the emperor Constantine in 313. After the reconquest of Mérida by Alfonso IX, which put an end to the Arab yoke (8th-13th century), the present church was built in the 13th century, on the same plan as the original basilica and using some of the same materials. Excavations carried out in the basement of the basilica since 1990 have brought to light the impressive underground enclosure, which can now be visited. In this crypt, where important Roman and Visigoth remains have been discovered.