Mainz Sightseeing Treasure Hunt and Walking Tour: Gutenberg and the lost relic

It is the early 15th century, and Mainz is the scene of a struggle between the patricians and the guilds of the city. The Gutenberg family risks being exiled, putting in jeopardy the promising printing experiments of young Johannes. Yet, providing the guilds with an ancient relic, passed on by generations of patricians, might quell the strife.

You are Gutenberg himself, on the hunt for the heirloom that was once of St. Martin.