The noble family Vilarnau settled in the s. XII in this privileged land of Penedes. Vilarnau is the etymological result of Vila Arnau, that is to say, the "country house or Domus" of the Arnau, that was in the stately demarcation of the term of the Castle of Subirats and where already in the 12th century vineyards were cultivated. Albert de Vilarnau, name that currently receives the most exclusive cava of the brand, was a very unique character that made the power of the family grow and even in the s. XIV was one of the patrons of the church Santa María de Vilarnau.
The first cellar with Vilarnau label was born in 1949, when the owner family started to market the cava that had once been produced by the vineyards planted in the "Can Petit i Les Planes de Vilarnau" farm. Since then, Vilarnau has been associated with a cellar of noble personality, elaborated under demanding quality standards and that takes maximum care of the detail.
In 1982, he became part of the González Byass family of wineries. The new winery was located right in the center of the farm and its inauguration took place in October 2005. The design of the modern winery is by the architect Luis González. In it, straight lines predominate and highlights the perfect adaptation to the beautiful Mediterranean environment through abundant glass. Three are the main integrating elements of the landscape: water, which borders the entire building and comes from rainwater, glass the windows and the oak wood of the exterior walls. The interior has been largely designed by the renowned artist Antonio Miró, who has created a warm and welcoming atmosphere.