'Treviño' (
Basque: 'Trebiñu') is a town and municipality located in the province of
Burgos, which in turn is part of the
autonomous community of
Castile and León,
Spain. Treviño is an
exclave of Castile and León, completely surrounded by the province of
Álava, in the autonomous community of the
Basque Country. There is a long lasting dispute on whether Treviño should remain in Castile and León, or become a part of the Basque Country. The latter option was approved by a majority of voters in a
plebiscite organized in Treviño in
1998, but the public consultation was considered void by the
Spanish government. Treviño is fostering ties with the
Basque government, and a program for teaching the
Basque language to young children is being implemented.

The province of Burgos with the Treviño exclave.
External links
★
Treviño online (Spanish)
★
Condado de Treviño (Spanish)
★
History of Treviño (Basque/Spanish)