Festivities of invierno de Villanúa Activity · Villanúa, La Jacetania, Huesca Image of Villanúa, not of the place itself. Villanúa's winter festival is held in a village that in the second decade of the 20th century exceeded 1,100 inhabitants, today known for the Cueva de las Güixas, with a visitor centre opened in 2009. Photo: France64160 (CC BY-SA 3.0) What to see and do in Villanúa