Keywords: Ensanche bilbao.jpg Bilboko Zabalkundearen Proiektua Pablo de Alzola y Minondo Severino Achúcarro y Ernesto de Hoffmeyer y Zubeldia 1876 - Bilboko udala Proyecto Ensanche de Bilbao Pablo de Alzola y Minondo Severino Achúcarro y Ernesto de Hoffmeyer y Zubeldia 1876 -Ayuntamiento de Bilbao 1876 Extension plan for Bilbao Spain designed by Achucarro and Hoffmeyer architects In black ink the plan shows the city as it was in 1876 Red ink shows the project to build the extension PD-art Source official Bilbao City Hall site http //www bilbao net External link http //www euskomedia org/aunamendi/1116 5 Otra versión Abando Urban studies and planning History of Bilbao Maps of Bilbao Cities in the 1870s 1876 maps Spain in the 1870s Artworks missing infobox template |