The name Theoderic's Palace usually refers to the architectural remnants of a building overlooking the present Via di Roma, next to the church of Sant'Apollinare Nuovo. From the mid-19th century, after the chance discovery of some floor mosaics, the palace has aroused the interest of many scholars. According to some of them, the building is the remaining part of a 7th-8th century gatehouse erected for the surveillance of the residence of the exarchs (i.e. the governors of Italian provinces ruling on behalf of the emperor of Byzantium). The structure was apparently an imitation of the so-called Calce ('bronze') palace in Constantinople, that was protected by a huge bronze gate.