The Colosseum, originally known as the Flavian Amphitheatre, was built between AD 72 and AD 80 by Empoeror Vespian, founder of the Flavian Dynasty. The amphitheatre was built on the site of an artificial lake, part of Nero's huge park in the centre of Rome which also included the Golden House (Domus Aurea) and the nearby Colossus statue. The elliptical building is measuring 188metres by 156metres and reaching a height of more than 48 metres. The Colosseum could accommodate some 55,000 spectators who could enter the building through 80 entrances. The southern side of the Colosseum was felled by an earthquake in 847 and so it is still in ruins.