Mausoleum of Theodoric
Ravenna, Italy
The Mausoleum of Theodoric (Mausoleo di Teodorico) is an ancient monument just outside Ravenna, Italy. It was built in AD 520 by Theodoric the Great, king of the Ostrogoths, as his future tomb.
Monument data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).