By slave labour.
They used to throw Christians to the lions there.
Contests between gladiators were held in the Colosseum.
There was one Coliseum. The Coliseum was an arena. But no other arena was a Coliseum. (Sited, Ms. Berryhill.Feb23.2016)
in 847 an earthquake hit the city of Rome shattering the roman coliseum. Parts of the arena fell of due to this and since the coliseum was made with the finest stone the remaining pieces were used to make other structures
The coliseum in rome was made for entertainment purposes for the people of rome and its governers and emperor. Except the entertainment was gory , there were gladiators that slaughtered each other or they fought animals and loads of these people and animals died just to entertain the people of rome.
It was a sporting venue in ancient Rome
The Colosseum is in Rome, Italy.Every important Roman city had a coliseum, (and many modern cities have one), but when one says "The Coliseum", it is usually assumed to be the one in ancient Rome.
The Coliseum
The most famous is the ancient Coliseum in Rome.
Rome
They went to Rome to see all the ruins at the ancient Coliseum.
They used to throw Christians to the lions there.
Rome
Just about any museum in Rome, Italy will offer pictures of the ancient coliseum. This does not come as much surprise though, as the coliseum used to be there. It still is, but it is not anywhere near the shape that it used to be in.
There was no charge for entering the Coliseum when I was there.
Coliseum is located in Rome, Italy.
Nothing has replaced the plumbing system under the Colosseum. It is still there.