Colosseum

The Colosseum (in Italian: Colosseo) is a famous arena in Rome, built in 72 AD. During the time of the Roman Empire, it was venue of gladiator fights. The Colosseum appears in Mario is Missing! as one of three landmarks Luigi has to visit in Rome. It is closed because Koopas stole a gladiator's spear and will not reopen until Luigi returns it. It is said to be in good condition, even though the Colosseum is in ruins. The player also learns that the harpoon was used by gladiators to try and make lions flee from the arena. When Luigi returns it to the Colosseum, he is rewarded $2000.

Pamphlet Information from Mario is Missing!
''The Colosseum was built in AD 72 at the command of an important Roman Emperor. Its name comes from a Latin word meaning big, and it really is huge. 524 meters in circumference, the Colosseum seated over 50,000 spectators. The rulers and the public came to the arena each week to watch games of strength and other entertainment. The games they watched were often very violent, with gladiators sent to fight riveting foes like hungry lions and elephants.