One of the world's most notable feats of architecture is the Colosseum in Rome. Opened in 80 CE by Emperor Titus, this ...

Explore a plan of the Colosseum to investigate six key areas. Each shows an aspect of the sophisticated technology and planning that lie behind this incredible structure.

We made a crucial mistake at the Colosseum in Rome, not once but twice. And although we have reasonable explanations both times, it still annoys us to this day. What was our mistake? We got basic ...