The Arian Baptistry is smaller and less celebrated than the Baptistery of Neon but equally worth visiting — and the theological context makes it intellectually more interesting. Built by Theodoric for his Ostrogothic subjects, who followed the Arian interpretation of Christianity, it preserves a dome mosaic almost identical in subject to the Neon Baptistry but subtly different in its theological emphasis.
The building is now a quiet side visit from the main Theodoric complex nearby. The mosaic is in good condition and can be studied at close range from the viewing platform inside. The empty throne at the centre of the composition — the hetoimasia, representing the throne prepared for Christ's return — is the theological heart of the image and the point at which careful looking rewards itself.
Admission is included in the combined ticket for Ravenna's UNESCO monuments.