Why go
Gonio-Apsaros stands as one of the best-preserved Roman fortifications in the former empire, its stone walls rising from the subtropical coast since the 1st century CE. Built by Roman legionaries to guard the empire's eastern edge, it later served Byzantine, Ottoman, and Russian garrisons across two millennia. Within its 2-meter-thick walls, archaeologists uncovered a 1st-century bath complex and, most remarkably, a small stone chapel holding what Orthodox tradition identifies as the tomb of Saint Matthias—the apostle chosen to replace Judas. The fortress rewards visitors with layered history: Roman inscriptions, Ottoman cannon emplacements, and the profound quiet of a sacred site where empire and pilgrimage intersect.