The Iberdrola Tower (Spanish: Torre Iberdrola, Basque: Iberdrola dorrea) is an office skyscraper in Bilbao, Spain. Its construction started on 19 March 2009 and was officially inaugurated by King Juan Carlos I on 21 February 2012. The tower has a height of 165 metres (541 feet) tall and has 40 floors. The first eight floors of the tower were to hold a hotel by the Spanish hotel chain ABBA, but the project was eventually cancelled. The hotel will be replaced by an auditorium with the capacity of 200 people. The remaining floors will have an office usage.