The current structure of the mausoleum is divided into two decagonal orders, one above the other; both are made of Istria stone.
Its roof is a single 230 tonne Istrian stone, 10 meters in diameter.
A niche leads down to a room that was probably a chapel for funeral liturgies; a stair leads to the upper floor.
Located in the centre of the floor is a circular porphyry stone grave, in which Theodoric was buried.
His remains were removed during Byzantine rule, when the mausoleum was turned into a Christian oratory.
In the late 19th century, silting from a nearby rivulet that had partly submerged the mausoleum was drained and excavated.

It was inscribed with seven other "Early Christian Monuments and Mosaics of Ravenna" buildings as one of the UNESCO World Heritage Sites in 1996.
According to the ICOMOS evaluation, "the significance of the mausoleum lies in its Gothic style and decoration, which owe nothing to Roman or Byzantine art, although it makes use of the Roman stone construction technique of opus quadratum, which had been abandoned four centuries before" and in the fact that "it is the only surviving example of a tomb of a king of this period."
The current structure of the mausoleum is divided into two decagonal orders, one above the other; both are made of Istria stone. Its roof is a single 230 tonne Istrian stone, 10 meters in diameter. A niche leads down to a room that was probably a chapel for funeral liturgies; a stair leads to the upper floor. Located in the centre of the floor is a circular porphyry stone grave, in which Theodoric was buried. His remains were removed during Byzantine rule, when the mausoleum was turned into a Christian oratory. In the late 19th century, silting from a nearby rivulet that had partly submerged the mausoleum was drained and excavated.
It was inscribed with seven other "Early Christian Monuments and Mosaics of Ravenna" buildings as one of the UNESCO World Heritage Sites in 1996. According to the ICOMOS evaluation, "the significance of the mausoleum lies in its Gothic style and decoration, which owe nothing to Roman or Byzantine art, although it makes use of the Roman stone construction technique of opus quadratum, which had been abandoned four centuries before" and in the fact that "it is the only surviving example of a tomb of a king of this period."
Mausoleum of Theodoric