The new UNESCO trail allows people to learn more about the colourful history of the Luxembourg City fortress and explains how and why it came to be on the world heritage list.

The new UNESCO trail leads hikers to unexpected and lesser known sports in and around the city. The fortress has been on the world heritage list since 1994

People interested in walking along the Luxembourg fortress trail can do so with an accompanying booklet or and app, which provides audio-visual information in five languages on 11 stops along the trail.

The fortress used to be a highly-contested military base until 1867, when it was largely dismantled. The fortifications were first built soon after the city's foundation in the 10th century and they became part of the strongest fortresses in Europe in the Renaissance era. Due to its prime location in the heart of Europe, it became a valuable asset to anyone who could hold it and was therefore the subject of many conflicts and battles.

The trail leads over the viaduct, from which it can be seen how contrast-rich the city can be. Next to the skate park close to the Pétrusse river, millennia old natural stone formations give the city its characteristic face.

While the UNESCO works with many organisations and respects a tendency towards more modern building, there are a number of strict requirements that cannot be violated. For example, nothing can obstruct the views and colours should match their environment. In essence, UNESCO ensures that the heritage sites remain visible and are not drowned out by modern-day living.