FYI colosseums aren't just found in Rome. Here are the ones from all over the world that you need to check out in your next trip according to MSN Travel.

The Amphitheatre of El Jem, Tunisia

Modelled on the original Colosseum in Rome, the amphitheatre of El Jem is notable for being one of the few freestanding arenas in North Africa. (Most were built into the side of hills.) 

It is excellently preserved and has been used as a location in both Life of Brianand Gladiator. You will need to run a gauntlet of aggressive souvenir hawkers to reach the site, but once inside you can climb to the upper reaches and enjoy spectacular views over the surrounding countryside. 

Pula Arena, Croatia

Built in the 1st Century AD, beside the sparkling Adriatic Sea, the Pula Arena is one of the best-preserved ancient monuments in Croatia. 

Once used for gladiator fights, it is now used as an outdoor cinema, an opera venue and a stage for concerts during the summer months. The underground passages, once used by the gladiators, now host a regular exhibition of viticulture and olive growing in Istria in ancient times.

Roman Arena, Arles, France

Suetonius (a Roman historian) once described Arles as the 'little Rome of Gaul' and it's not hard to see why. The Roman Arena in the centre of the city would not look out of place in Rome.

Built in 1 BC and capable of seating over 20,000 spectators on three tiers, it is still used regularly to host events today. In July and August theatrical and sporting events, including gladiator fights, are held every Tuesday and Thursday.

Amphitheatre of Nimes, France

Built at the end of 1 AD to seat 24,000 spectators, the Arena of Nîmes was constantly vying with the one in Arles to be the most important Roman amphitheatres in Gaul. 

That rivalry continues to this day, with the hosting of the biggest historical re-enactment of Roman times in the world held in the arena every April. Over 400 actors from all over France, Germany and Italy descend upon Nîmes to relive the famous ludi (games).