After Galerius's death in 311, he was buried at Gamzigrad (Felix Romuliana) near Zajecar, Serbia. The Rotunda stood empty for several decades until the Emperor Theodosius I ordered its conversion into a Christian church in the late fourth century.[4] The church was embellished with very high quality mosaics. Only fragments have survived of the original decoration, for example, a band depicting saints with hands raised in prayer, in front of complex architectural fantasies.