The Basilica of Santa Prassed was commisioned in the eighth century by Pope Hadrian I.
Interior of Basilica of Santa Prassede, Rome
See http://upload.wikimedia.org/wikipedia/commons/8/85/Interior_of_Basilica_di_Santa_Prassede%2C_Rome.JPG for the source of the above photograph.
For video of this church see https://www.youtube.com/watch?v=6FL81EVJTUE&list=PLOF8CAav1A6YGsEvjlBWXlgEsvj_IHujd
See http://en.wikipedia.org/wiki/Santa_Prassede and http://rometour.org/church-chiesa-di-santa-prassede-allesquilino.html for photographs and descripion in English of mosaic pictures in the interior.
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