In AD72, Emperor Vespasian decided to devote part of the area occupied by the Nero's Domus Aurea to public entertainment, and built the biggest Roman amphitheatre in the world: the Colosseum. This Flavian amphitheatre took its name either because it stood near the statue of Nero, the "Colosseum", or because of its own colossal dimension. Three types of columns support the arcades and the walls are made of brick and volcanic tufa faced with marble blocks. Colosseum is well-known for the spectacles organised in it, consisting in duels between gladiators and wild animals. These spectacles went on for centuries and were banned only in 404.