2-368-548 - Samuel Magal/Sites & Photos/Heritage Images

The remains of a stoa, Pamukkale (Hierapolis), Turkey. A stoa is a covered walkway or portico, common in ancient Greek times. The mineral springs and the ruins of the ancient city of Hierapolis make this an unusually attractive place. The Hittites and the Phyrigians, the early civilisations in Anatolia, built altars, temples or cities at almost every water source.