There are lots of ways to see this WHS - in two countries. I have been to the UK's Hadrian's Wall site, but for the German bit, I focused on Saalburg Roman Fortress near Bad Homburg. It is the only Roman fortress in the world to be rebuilt and is imposing on a hill with large external walls guarding the buildings inside.

If a reconstructed Roman fort is not your thing but you’re in the area near Saalburg, another option is to go exploring yourself. In the forests nearby are relatively untouched Roman ruins and visitors are free to hike along the trails and discover things for themselves.

In fact, it’s the same along much of the original boundary wall that stretches across the Germany. Although there are official sites that have been protected or restored, there’s still a lot which is just out in the open. Because the original route of The Limes covers so much of the country, it’s easy to come across a part of it on your travels and see what there is to visit in the area.