The Decapolis

The Decapolis — Greek for 'Ten Cities' — was a loose league of Hellenistic city-states on the eastern frontier of the Roman Empire, established after the Roman general Pompey reorganised the region in 63 BC. Concentrated in what is now northern and central Jordan, with outliers in modern Israel and Syria, the cities shared Greek language, Roman architecture and civic autonomy while functioning as independent polities. Their golden age spanned the 1st through 3rd centuries AD, when colonnaded streets, theatres, nymphaea and bathhouses arose across the region in a burst of municipal ambition.

Four of the ten cities lie within Jordan's borders. Gerasa (Jerash) survives as one of the most complete Roman provincial cities on Earth, its oval forum and colonnaded cardo largely intact. Philadelphia — modern Amman — retains its Hercules Temple and Roman theatre on the Citadel. Gadara (Umm Qais) commands panoramic views over the Sea of Galilee behind black basalt colonnades, while Pella preserves layers of settlement stretching back 8,000 years. Together these four cities map an arc across northern Jordan that no other country can match.

Jerash lies 48 kilometres north of Amman, an hour's drive; Umm Qais is roughly 120 kilometres north. A logical circuit runs Amman–Jerash–Ajloun–Umm Qais–Pella and back south through the Jordan Valley, taking two to three days. Spring and autumn provide the most comfortable conditions for exploring largely unshaded ruins.