![Scenic view of ancient Pergamon ruins in Turkey, highlighting historical architecture.](https://www.onenationtravel.com/wp-content/uploads/2022/11/Pergamon1.jpg)
Pergamon
The magnificent hilltop city of Pergamon dates back to the 5th century BC and was once a hotbed for learning, culture, and invention, flourishing until the 14th century. Remnants of the city’s most important structures remain, such as the Acropolis, the Red Basilica, aqueducts, a major medical center, an audaciously steep amphitheater, and a historically important library.