S. Sebastianus2022-09-25T03:55:44ZL. Quilicitag:atlantides.org,2010:pleiades/cd4275957947b994447b860ed6af5b30S. Sebastianustag:atlantides.org,2010:pleiades/cd4275957947b994447b860ed6af5b302022-09-25T03:55:44ZS. Sebastianus (San Sebastiano fuori le mura) is a Christian basilica outside the walls of Rome; the earliest phase belongs to the fourth century AD.41.855295 12.515036 41.855902 12.515036 41.855902 12.516066 41.855295 12.516066 41.855295 12.515036