Bilbao Sheraton by Legorreta + Legorreta Architects. The hotel is part of the new Ria 2000 masterplan for the City of Bilbao, Spain."Inspired by the work of the artist Chillida and the solid roots, history and culture of the Spanish Basque Country, the building is treated like a sculpted block of solid stone, to which certain perforations have been tilled."

via architecture-page