Cento x Cento, which roughly translates to "hundred by hundred," is a peculiar term that refers to a hidden, underground torrent system that runs beneath the streets of Torino. This ancient network of tunnels and canals, dating back to the 17th century, was originally designed to drain the city's sewage and rainwater. Over time, however, the system has evolved into a somewhat mystical entity, shrouded in mystery and intrigue.