Legend has it... that you had to be "this tall" to have this ride named after you. The namesake of the edifice was apparently this tall... anything short of this and the word Collosuss just won't swing it. The Colliseo ("check out the big brains on Brad") is a mighty structure. Way ahead of its time and I suspect the structural engineers of today might do well to spend a bit more time studying those who came before them and learn from them. This is the polite way of describing the Romans who, once again legend has it, stole... sorry learnt the technique of the arch from the Etruscans right after they conquered them.. and then improved it.
Those in charge deserve some congratulations for the manner in which this site is preserved and the visitors moved around the structure. (Advice Alert: pay the extra Euro for a "skip the line" tour. We sailed past hundreds of souls clearly totally over the waiting in a far queue game. (Only the well practised Russians seemed happy)
The fact that there remain aqueducts and bridges in use today that were built by the Romans... and perhaps to be more precise the lads down at the SPQR Roman Legion who, apparently did more than murder, rape and pillage (or was that just the Vikings who made a habit of such approaches..?) and as God is my witness (actually more precisely my iPhone 6 as my witness) the lads are still at it today... building things I mean.
Actually, the SPQR is part of a PR strategy that clearly worked. The People's Republic of Rome or Senatus PopulusQue Romanus was used on documents, announcements... and the banners of the all conquering Roman Legion.