What continents were known to Europeans before the era of the great geographical discoveries?

Until the onset of the era of the Great Discoveries, the famous parts of the world were Eurasia and the southeastern part of Asia.
In addition, large cities and Muslim countries existed on the northern coast of Africa and the Arabian Peninsula, which were previously part of ancient civilizations.

Other lands that were known to Europeans were the large islands around the coast of Europe, as well as the coastal areas of Asia.

The discovery of the Americas fell only in the 15th century.
Almost 3 hundred years later, people learned about the existence of Australia.
The last open continent was Antarctica.