1. The Colosseum is an ancient amphitheatre.
2. It is in the centre of Rome, Italy.
3. People went there to watch gladiator games, animal hunts and plays.
4. Earthquakes and stone thieves changed the Colosseum.
5. Subjective estimation: the most popular, interesting, different, important.
Size: the largest.
Age: modern.
Relationship: gladiator, animal, stone.