Altıntepe is located at the 12th kilometre on the highway from Erzincan to Erzurum. The site was discovered in 1938 during the construction of a nearby railway line. The remains are situated on a volcanic hill 60 m high. During excavations undertaken between 1959 and 1968 and led by Professor Dr. Tahsin Özgüç, a fortified settlement from the Urartian period was found. In the excavated area a temple or palace, a great hall, a warehouse, city walls, various rooms, and three subterranean chamber tombs on the south side of the hill were found. After a long gap, excavations were restarted in 2003 by the decision of the Council of Ministers, under the leadership of Professor Dr. Mehmet Karaosmanoğlu.
The hill was a significant center for the Byzantine Empire and has a church with three naves and mosaic floors. The church was built on a natural terrace and has a rectangular floor plan. The colorful mosaic floors with various geometric shapes and figures of plants and animals are unique to the region.[1]