Their concrete, opus caementicium, was a key innovation that contributed to the durability of Roman architecture. The Colosseum in Rome ... s capabilities in large-scale projects.

“Filling the Colosseum with water looks silly,” one ... where Lucius leads fellow slaves into battle against a full-scale Roman bireme, one of his compatriots has the bad luck to take an ...

ROME, Italy — The ancient Roman Colosseum will be the venue of gladiator fights — albeit staged — for the first time in two millennia under a $1.5 million sponsorship deal with Airbnb that ...