About The builders' challenge
Explore the cathedrals in Strasbourg, Ulm, and Freiburg in a new and playful way.
Reconstructions, anecdotes, photos, and original blueprints are all available for you to discover.
Furthermore, you can visualise the different designs for the virtual second tower from the Tower Builder game, live on site!
Download and install
The builders' challenge version on your
Android device!
Downloaded 1,000+ times, content rating: Everyone
Android package:
air.fr.chousse.CathedraleTransmedia, download The builders' challenge.apk