Pez made from pine resin, traditional mountain architecture and a path through pine and beech forests offer different ways to explore the culture and landscape of Yésero. Yésero is one of the eleven municipalities in the province of Huesca included in the Ordesa-Viñamala Biosphere Reserve. In the wider region surrounding the reserve, the landscape is shaped by high-mountain scenery, glaciers and glacial landforms, deciduous mixed forests, black pine stands, fir forests and high-altitude pastures.
Pez Tradition and Casa de la Pez
Casa de la Pez is a restored 16th-century building in Yésero. Since 2005, it has housed a permanent exhibition on the traditional production of Pez. The exhibition explains how the material was obtained from pine resin and used to mark livestock, for therapeutic purposes and for waterproofing. The subject thus leads from the production process to the various purposes Pez served.
Admission to Casa de la Pez also includes the Iglesia de San Saturnino. Check current visiting conditions and ticket details before your visit.
Religious Buildings and Mountain Architecture
The tower of the Iglesia de San Saturnino preserves Yésero’s only surviving Mozarabic element: two loophole windows with horseshoe arches. The Ermita de Nuestra Señora de las Nieves was built in the 17th century and is located near the confluence of the Sía and del Infierno ravines. Both buildings offer different ways to explore the local heritage: one through an architectural detail on the church tower, the other through its historical date and location near the confluence of the ravines.
Examples of traditional vernacular mountain architecture also contribute to Yésero’s architectural character. Some buildings were constructed using centuries-old dry-stone techniques; characteristic structures include bordas and casetas. The architectural heritage therefore extends beyond religious buildings to include traditional forms of mountain architecture.
Ruta de la Pez and Senda Brioleta
The Ruta de la Pez takes approximately two and a half hours and starts in the main square of Yésero. At the roadside shelter at the junction with the N-260, there is an information board and a sign pointing to the start of the route; check the signs on site. The route follows a gently ascending or easy-to-walk path through pine and beech forests along the Barranco del Infierno. The approximate duration provides a guide for planning, while the forest and ravine landscape gives a sense of the character of the path.
For 2026, the Senda Brioleta in Yésero was announced as an accessible path approximately three kilometres long. Check access and trail conditions before using it. For planning, the Ruta de la Pez provides an approximate duration, while the Senda Brioleta has an announced length of around three kilometres.
Festivals and Cultural Events
The small celebration of San Sebastián is held on 20 January. The night before, a “chera”, or bonfire, takes place at night in the centre of Plaza del Fenero. The annual festival programme may vary; if you would like to plan your trip around it, check the dates in advance.
The Encuentro de Escritoras Aragonesas Brioleta is an established cultural event that promotes, publicises and connects Aragonese women writers. Its 19th edition is scheduled for 2026. The format of the gathering may evolve.
Discover more destinations: Alcalá De Gurrea, Fonz, Berganúy, Aso de Sobremonte, Chía, Mediano, Ribagorza, Plan
For the overview of the wider area: Huesca.
