Which stone is the Roman Colosseum made of?

The travertino of the Colosseum was quarried from Tibur (today Tivoli, a town about 20 Km from Rome); it was used for the main pillars, the ground floor and the external wall. A road was built for the transport of the stone from Tibur. read more

The stone can stand a pressure of 226/298 Kg/cmq, depending on its quality. The travertino of the Colosseum was quarried from Tibur (today Tivoli, a town about 20 Km from Rome); it was used for the main pillars, the ground floor and the external wall. A road was built for the transport of the stone from Tibur. read more

The Romans constructed the Colosseum of a primitive form of concrete. They made concrete using lime, which they burned to create quicklime, water and volcanic ash. The volcanic ash served as the aggregate and is likely the reason Roman concrete, which was 10 times weaker than the concrete used in 2014, remains after almost 2,000 years. read more

The Colosseum is situated just east of the Roman Forum. Construction began under the emperor Vespasian in AD 72, and was completed in AD 80 under his successor and heir Titus. Further modifications were made during the reign of Domitian (81–96). read more