How many cubic metres of travertine is the Colosseum estimated to have? August 20, 2014 By Christina Varveri Leave a Comment The Colosseum, also known as the Flavian Amphitheatre, is the largest amphitheatre of the Roman Empire, as well as the largest amphitheatre in the world. [Read more…] about How many cubic metres of travertine is the Colosseum estimated to have?