Smithsonian contributing writer Tony Perrottet, who wrote recently about Rome’s underworld—the city lurking beneath the city.

Discover the Colosseum by night. Every Tue & Thu, join a 60-min guided tour of the arena, underground, and exclusive exhibits ...

Finally, you'll spend some time at the Roman Forum and Palatine Hill. Recent visitors highly recommend this tour, noting the underground portion made their visit to the Colosseum extra special.

Roman Forum and Palatine Hill (valid for 24 hours) and you can visit all three in one day. It doesn't include a visit to the Colosseum's underground tunnels. For that, you'll have to book a guided ...

The underground staging area had “countless ... an enormous cloth awning drawn over the Colosseum roof by sailors from the Roman naval headquarters at Misenum, near Naples.

The ancient Roman Colosseum will get a new gladiator floor ... 19th century had the floor removed to get a clear view of the underground passageways under the Colosseum. The grand stadium ...