It occupies the lands of the plain of Ansio, previously owned by Altos Hornos de Bizkaia. It was inaugurated on April 21, 2005, being finished “some” of its details throughout that same year. Designed by two engineering companies Idom and Sener.
It occupies an area of 251,055 m2, of which 155,000 m2 are divided into six one-story pavilions without columns thanks to a new construction system. The four smallest ones exceed 15,000 m2 each.
Of the remaining two, number 4 stands out, called Bizkaia Arena, a space where all kinds of shows, sporting, theatrical, musical … can be held, with a capacity for 20,000 spectators. It has parking for 4,000 vehicles. It can be accessed by road or by Metro, since the underground has a stop next to the pavilions.