Aerial view of Constantine Palace, Strelna, near St. Petersburg, Russia, Europe

Close-up of wall paintings (frescoes), of Emperor Constantine and Teodosia holding the true cross, St. Barbara Church, Goreme Museum, Goreme, UNESCO World Heritage Site, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia

Statues including the Emperor Constantine and St. Denis carrying his head, Virgin's Gate, west front, Notre Dame Cathedral, UNESCO World Heritage Site, Paris, France, Europe

Church of St. Constantine and Elena, Old Town, Plovdiv, Bulgaria, Europe

Sculpture of Neptune in sea near the beach, resort complex St. St. Constantine and Helena, Varna province, Bulgaria, Europe

Russian Orthodox Church of St. Constantine and St. Michael, Vilnius, Lithuania, Baltic States, Northeastern Europe

Umbrellas on the beach, St. Constantine and Helena resort, Varna province, Bulgaria, Europe

Umbrellas on the beach, St. Constantine and Helena resort, Varna province, Bulgaria, Europe

Umbrellas on the beach, St. Constantine and Helena resort, Varna province, Bulgaria, Europe