Ticket Prices, Best Crypts, Tours & Honest Reviews Why This Guide Matters Rome hides over 150 km of underground tunnels  where the early Christian community buried its dead, yet most visitors only see the Colosseum above ground. Four catacomb complexes (plus one legendary bone‑filled crypt) are open to the public, and every brochure claims it’s the  “must‑do macabre” stop. Reality: Ticket prices jump from €10 DIY  to €75 night tours but some charge a “mandatory guided fee” yo