Aste Nagusia Bilbao - Wilbert, Marcos and I hit the streets of Bilbao to enjoy the upbeat atmosphere offered by the year's biggest festival: Aste Nagusia (or Big Week). One week after San Sebastian's version, the bigger city of Bilbao offers a much different atmosphere (but equally enjoyable) than San Sebastian. Here the boys are wearing the traditional blue bandana the Bilbainos wear every year for the event.