The underground passageways and corridors, or hypogeum, of Rome’s Colosseum opened to the public for the first time in the modern era on June 26 after a lengthy restoration. Entry to the hypogeum is included with an “Underground and Arena Full Experience” ticket (€22, near $26). Tickets can be purchased at www.coopculture.it/en/colosseo-e-shop.cfm.
In 2015, a portion of the underground known as the Beehive, where elevators took gladiators and animals up to the arena floor, was opened to the public (Oct. ’17, pg. 69).