Upper German Raetian Limes
In the year 2005 the Upper German-Raetian Limes was added to the UNESCO World Heritage List. Together with Hadrian’s Wall in Great Britain (UNESCO World Heritage since 1987), the limes make up the multinational World Heritage Site entitled ‘Frontiers of the Roman Empire’.
The limes mark out the Roman border fortifications with castles, watchtowers, walls and palisades, which the former superpower used to demarcate its territory against the free Germania. With 550 km in length, it is the longest monument in Europe.