The Colossus, Colosseum!

City: Rome
Approximate year: Between 70 - 90 A.D.
Emperor: Flavius Vespasian
The goal: To construct a magnificent, sumptuous and imposing structure, to face the "Colossus of Nero", a huge bronze statue 35 meters high that portrayed the previous emperor.
Used materials: Marble, tile, bronze, tuff and travertine stone.
Capacity: Initially 50,000 people comfortably in its 3 floors; later, 90 thousand people in 4 floors.
Year of inauguration: 80 A.D.
Emperor: Titus, son of Vespasian
Function: To host spectacles, such as combats between gladiators, fights between warriors and wild animals, executions and naval battles (it had a system that transformed the arena into a large lake).
Size of the arena: 85 by 53 meters
Size of the Colosseum: The height of the outer wall is 48 meters; it is elliptical in plan and is 189 meters long, and 156 meters wide.
No one knows for sure who designed it.

"Hail, Cesar, those who are about to die salute you!"

With the salute and reverence that would become famous, the initially "Flavian Amphitheater" and later "Colosseum", was inaugurated for the first combats which ones lasted about 100 days, for the delirium of the public and under the watchful eye of the emperor who watched everything from his cabin right next to the arena.

For approximately 500 years, the Colosseum stage was used for these shows that were very intense. It is estimated that hundreds of gladiators and about 5,000 ferocious animals fell dead in the arena until the year 404 when Emperor Flavius Honorius permanently banned fighting between gladiators.
In the Middle Ages, the Colosseum stopped being a place for spectacles and began to be used for housing and as a workshop, a fort, a quarry, a headquarters of religious orders and a Christian temple. Throughout the fifteenth and sixteenth centuries, it was plundered many times and much of its noble materials that had been part of it for a long time were lost.
In the following century, XVII, Pope Benedict XIV declared it as a sacred place.

Today, in ruins due to earthquakes and looting, it is still the great symbol of the Roman Empire and the main archaeological site of Rome, receiving an average of 3 million visitors annually. The Colosseum was declared as one of the Seven Wonders of the Modern World and World Heritage, conferred by UNESCO.