Like in other cities of the Basque Country nigthlife is centered around the old medieval zone of the city or 'Casco Viejo' where there a bar every few meters. Same style bars usually but now always tend to be around the same area. Depending of what kind of nigth you are searching for you should head to one street or another:
Cuchilleria
la cuchi: you could say is the 'basquest' street. many of the bars play basque-rock and are decorated with typical basque parafernalia. posters supporting independence for the basque country and sometimes even eta can be seen at many places. people from all ages from 15 to 40 something can be seen around here.