According to Wikipedia, "Greece, officially the Hellenic Republic, is a country in Southeast Europe. It is situated on the southern tip of the Balkans, and is located at the crossroads of Europe, Asia, and Africa. Greece shares land borders with Albania to the northwest, North Macedonia and Bulgaria to the north, and Turkey to the northeast. Greece has the longest coastline on the Mediterranean Basin, featuring thousands of islands. Athens is the nation's capital and largest city, followed by Thessaloniki and Patras." "Greece is considered the cradle of Western civilization, being the birthplace of democracy, Western philosophy, Western literature, historiography, political science, major scientific and mathematical principles, theatre and the Olympic Games." "The country's rich historical legacy is reflected in part by its 18 UNESCO World Heritage Sites. "
Here we quote the best way to travel in Greece provided by Earth Trekkers, a very good travel website created by an around-the-world traveler.