Miletus

Miletus was one of the ancient Greek world's most influential city-states, founded around 1100 BCE on the western coast of Asia Minor. In the 6th and 5th centuries BCE it flourished as a center of early philosophy — Thales, Anaximander, and Anaximenes all called it home and established the foundations of Western natural science here. The city is also credited with pioneering the orthogonal grid street plan, later codified by native son Hippodamus of Miletus, whose urban planning principles spread across the entire Greek world. Its eventual decline came not through conquest but through nature: the Maeander river steadily silted up the harbor over centuries, cutting the city off from the sea trade that had made it great. Today the site is dominated by a well-preserved Roman theater seating around 15,000, while the broader ruins — agora, baths, stoa remnants — convey the ambitious scale of a city that once shaped Mediterranean civilization.