There are several options where to buy tickets to visit the Colosseum without standing in long queues.

The Colosseum can accomodate up to 3000 people at once

First, you can buy a guided tour with included tickets. So you will skip the line and recognize many interesting facts about the site where famous gladiator games took place in the period of the ancient Roman Empire.

Second, you need to buy a ticket online before visiting:

Update! In 2022 all offline ticket offices are closed due to covid-19.

Ticket is valid for 48 hours and you will also gain entrance to Palatine Hill and the Roman Forum

There are always many visitors to the Colosseum, so you should plan your visit in advance and better come right after its opening time at 8.30 am. Another option is to purchase tickets online here, but there is a reservation fee of 2 euros. Moreover, holders of Roma Pass can use it to visit the Roman Colosseum.