Where is the border between Europe and Asia?

The official border between Europe and Asia runs through the territory of Russia. In the south, the dividing line runs through the Aegean and Marmara Seas, the Dardanelles, the Bosphorus and the Black Sea. Along the North-West coast of the Caspian Sea to the mouth of the Ural River. Its channel is considered to be the border right up to the source – the Uraltau ridge. Further, the mainland is divided by the Ural Mountains, which stretch to the Arctic Ocean.