The Mausoleum of Theoderic is the most famous funerary construction of late antiquity protected by UNESCO as a World Heritage Site. The monument was built by the will of Theoderic as his own burial around 520 AD. This remarkable building testifies to the effort made by the Gothic king in maintaining a balance, both political and religious, between the ancient Roman people and the invading Goths. This is made visible by the superb and peculiar architectural composition in which Roman tradition and new Eastern influences combine to make this imposing monument unique. The Mausoleum has a decagonal perimeter that develops on two levels surmounted by a large monolithic dome. The masonry, made of opus quadratum and carved in Aurisina stone, reveals the dry technique, meaning that the rows of squared blocks are simply overlapped and held together inside by swallow-tailed iron clamps. The lower level is articulated in a series of niches on the nine sides, while in the tenth side facing west is the entrance door. The outer profile of the upper chamber is recessed, creating an uncovered walkway of 1.30 m along the entire outer perimeter. Almost at the base of the dome, the profile becomes circular through a sturdy band that is immediately placed above the lintel of the entrance door. Just above the band runs a cornice with a "tongs" decoration, a motif already found in Ostrogothic goldsmithing and also present in the so-called "Theoderic's cuirass", found in the area of the Gothic necropolis not far from the mausoleum. The extraordinary covering has no equal in ancient and modern architectural heritage. Today, the Mausoleum is set in a large park that surrounds the monument, placing it in a perspective of "power" aimed at welcoming and emphasizing this extraordinary construction. A unique monument that testifies to the personality of King Theoderic, far from being barbaric, but cultured and skilled military leader and bringer of peace.