The Bizkaia Delegation Palace is an eclectic mansion in the Ensanche area of Bilbao, Spain. It's the seat of the executive branch of Government of Biscay, the legislative assembly meets in Gernika. It was built between 1890 and 1900 by architect Luis Aladren, by the Gran Vía de Don Diego López de Haro avenue. Across the street on its back, there is the Library of Biscay.