Rome

Rome is the capital of Italy, and a center of history and culture. The gang has been there on several occasions.

Season one
The contestants did a motor scooter race there. (Italy and Kitty Hawk, North Carolina)

The Richie Rich/Scooby-Doo Show
Shaggy Rogers, Scooby-Doo, and Scrappy-Doo went back in time and fought gladiator Rocky Maximus at the Colosseum after eating a strange pizza. (Et Tu, Scoob?)

Scooby-Doo and the Cyber Chase
The gang also once went to a replica of the Roman Colosseum in cyberspace.

Scooby-Doo! (DC Comics)
The gang went to a museum and caught a jewel thief dressed as a devil on horseback, but couldn't recover the loot. (Scooby-Doo in The Dragon's Eye, Part 3, Beat The Devil)

Mystery Inc. faced a lawsuit in Rome from one of their culprits who said he was falsely accused. (The Trial Of The Century!)

Season one
The gang passed through Rome on a cross-country trip, but no mysterious events happened there. (Pompeii and Circumstance)

Appearances

 * LAL
 * 107. Italy and Kitty Hawk, North Carolina
 * The Richie Rich/Scooby-Doo Show
 * 109(a). Et Tu, Scoob?
 * DTV4. Scooby-Doo and the Cyber Chase (video game)
 * Scooby-Doo! by DC Comics
 * Scooby-Doo in The Dragon's Eye, Part 3, Beat The Devil
 * The Trial Of The Century!
 * What's New, Scooby-Doo?
 * 113. Pompeii and Circumstance