It’s true, everyone wants to see the Colosseum in Rome. Italy’s top tourist attraction draws millions of visitors every year for good reason—no other archaeological site better symbolizes the Roman Empire’s former glory.

However, the city of Rome is a true open-air museum spanning 3,000 years of history, with troves of ancient ruins worth visiting. From haunting crypts and necropoles to preserved roads and Roman temples, each site adds (literal) layers to Rome’s historical heritage. So, once you’ve had your fill of gladiator battles, visit these other worthy contenders for a noteworthy trip through Roman ruin history.