Determining the boundaries between the continents is generally a matter of geographical convention and consensus.
The Mediterranean Sea, between Africa and Europe
The Atlantic Ocean around the plate boundaries (text is in Finnish)
Pedestrian bridge over the Ural River in Orenburg in Russia. The bridge is between Asia and Europe
Road sign on the continental border between Asia and Europe near Magnitogorsk, Ural Mountains, Russia. It reads "Europe", above a crossed-out "Asia", as one enters Europe and leaves Asia
Europe
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Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterrane
Depiction of Europa regina ('Queen Europe') in 1582
Paleolithic cave paintings from Lascaux in France (c. 15,000 BCE)
Stonehenge in the United Kingdom (Late Neolithic from 3000 to 2000 BCE)
The Parthenon in Athens (432 BCE)