 The building measures 136 m (446 ft) in length and 109 m (358 ft) wide, and features 120 arches.It has an oval arena surrounded by terraces, arcades on two levels (60 in all), bleachers, a system of galleries, drainage system in many corridors of access and staircases for a quick exit from the crowd.It was obviously inspired by the Colosseum in Rome (in 72-80), being built slightly later (in 90).