Abando was the name of an old municipality of Biscay (Spanish Basque Country), that was eventually absorbed by Bilbao. Nowadays, the name refers to the central district and neighbourhood of this city, holding the provincial administration, the long-distance RENFE Bilbao-Abando train station, three subway stations (Abando, Moyúa and Indautxu), and many commerces like El Corte Inglés department store.
The district has a population of 51,875 inhabitants and is divided into two neighbourhoods, the proper Abando and Indautxu to the west of Moyúa square. It has an area of 2.14 km2 (0.83 sq mi), all of it is built up and its population density is 24,240/km2 (62,780/sq mi).
It is speculated that Abando could correspond to the town of Portus Amanus, mentioned by Romans, but it's never been confirmed archaeologically.
In 1300, the city of Bilbao was founded in an area that was previously part of Abando and Begoña.
During the 18th century Abando was the most populated parish of Biscay, with about 2,100 inhabitants. This population was disperse in farms occupying a wide rural area, except for some denser areas close to the river, on the opposite shore of what was then Bilbao.
During the 19th century Bilbao became too congested and needed space to grow, so finally in 1870 Abando was annexed to expand Bilbao. This annexation affected one of the most famous natives of Abando, Sabino Arana, and was one of the driving forces for the inception of the Basque nationalism.
The Ensanche project of Alzola, Achúcarro and Hoffmeyer architects was approved in 1876, Abando was to become the modern center of Bilbao, with wide straight boulevards in a grid layout, the main one being Gran Vía de Don Diego López de Haro, contrasting with the maze of narrow alleys of the Casco Viejo, the old town of Bilbao.