While workers prepared the site for a new boathouse near Basel, they uncovered a relic from the past—an enormous Roman amphitheater ... for spectators. A post imprint near the arena suggested ...

During gladiatorial games in the arena ... accommodated up to 50,000 spectators, who enjoyed delights including prizes tossed into the crowd, pastries and wine. Roman citizens sat according ...

It also features sophisticated systems for spectator entry and exit ... including the construction of a small church and a cemetery in the arena itself, and later as a fortress for noble families.