Bük is a town in Vas County, Hungary, close to the Austrian border.

Nowadays it has a reputation for being a popular holiday destination in Hungary and one of the major spa and wellness spots in Central Europe.

Pál Felsőbüki Nagy was a famous member of the Hungarian House of Representatives in the 19th century.

In the autumn of 1957, an investigation was made to establish the presence of oil in the region, but a hot water spring was found.

Around the bath several camp sites, hotels, boutiques, pensions and restaurants were built and in 1992 the 'recreation park' was opened as well.