Praetorium – Roman Governor's Palace

The underground ruins of the Roman governor's palace beneath the old town – a striking testimony to the era when Cologne was a provincial capital.

Roman Cologne Archaeology Rainy day

The Praetorium is the preserved governor's palace of Roman Cologne (CCAA), beneath the old town. Here the governor of the province of Lower Germania once resided – one of the most powerful figures on the Rhine.

Source: Wikipedia · retrieved 2026-06-24

At a glance

Era: Roman antiquity (CCAA)
Function: seat of the governor of Lower Germania
Location: underground, near the Historic City Hall
Character: an archaeological site beneath the city

Cologne as a provincial capital

The CCAA was the capital of the Roman province of Germania inferior. Beneath today's city-hall quarter, impressive wall remains of the governor's palace survive, conveying a sense of the importance of Roman Cologne. The underground complex is among the city's most significant archaeological remains – a fascinating walk into antiquity.