Aquatour. A 2 hours promenade which crosses the historical sites of the old city including the tunnel beneath the city center. The course highlights the relations between ressources of water and the development of the city. The promenade is supervised by the Environmental Delegate of the City of Luxembourg. Guided tour from 17:00 - 19:00pm!
Useful information: 
Free of charge! Guided tour from 17:00 - 19:00pm! Registration required until 8th June 2018!