The „Limes“with a total length of 550 kilometres is Germany’s largest archaeological monument and runs right through Bad Ems. Germany’s oldest reconstruction of a Roman watchtower (1874) is to be seen on the “Wintersberg”. In the “Pfahlgraben” , not far from the spa quarter, as well as in other places around Bad Ems palisades made of massive locks can be admired. There you will also find remains of watchtowers. Near Arzbach there is a reconstructed watchtower, which you can climb up. It is situated on a 423 metres high basalt mountain peak. Roman findings are shown in the local museum.
You can find a detailed discription of the “Limes” » here
Unesco Welterbe Römischer Limes
56130 Bad Ems