Floors 1 to 5 will hold a five star ABBA hotel, with 150 rooms.
The lot property of Renfe, included in Bilbao Ria 2000, will be sold to Iberdrola for €79 million ($103 million).
The first rock caisson ceremony was on March 19, 2007.
It will surpass Bolueta I as the tallest building in the city of Bilbao and Torre BEC as the tallest building of the Basque Country. It will also hold the tittle for the tallest office building surpassing Torre BEC as well.