And If We Had To Do It Again ?

The pantheon (1x4)

:

The Pantheon, a temple built almost two thousand years ago, is an extraordinary monument. It has survived the ages in practically intact condition and its dome, built with more than 4,500 tons of concrete and measuring 43 meters in diameter, shows no signs of weakness. This architectural and engineering feat calls into question our current know-how: would we be able today to reproduce such a masterpiece?