The Lost City of the Incas”, is the most impressive remainder of the Incan Empire. It was built in 1462 AD and abandoned only a hundred years later. The three primary structures are the Temple of the Sun. Ephesus was an Ionian Greek city in ancient Anatolia. He city was located in Ionia, where the Cayster River flows into the Aegean Sea. EPHESUS (Turkey): one of the most important cities of early Christianity. Of all the lost cities that have been found and studied, perhaps none is more mysterious than Machu Picchu. There is a list of most famous lost cities in the world.