The best cycling routes around Marracos

At this point, the Gállego channel flows into the reservoir. The confluence often attracts herons, cormorants, and other birds that take advantage of the abundance of fish. From the shore, you have a sweeping view of the reservoir, with the Pyrenees in the background on clear days.

It is a natural geological formation formed by the erosion of water on different types of strata and calcifications.

The Aguarales de Valdemilaz, also known as Aguarales de Valpalmas, are a stunning geological landscape located near the town of Valpalmas, in the Cinco Villas region, province of Zaragoza. This site is famous for its unique rock formations, created by water and wind erosion over millions of years. These formations, known as fairy chimneys, are similar to those seen in the Göreme Valley in Cappadocia, Türkiye.

In the centre of Lupiñén, very close to the church, there is the fountain with eight spouts. It is clear why it is called that. It is well-kept and the surroundings are well-maintained, making it a pleasant place to stop and cool off.

The church of San José is the parish church of the Tormos neighborhood, a town belonging to the municipality of Alcalá de Gurrea, built to house the workers of the Sotonera dam and reservoir. The church, inaugurated in 1926, has a rectangular plan and a polygonal head facing southwest. The free-standing bell tower is separate from the main building and is built of brick. Its construction does not correspond to a defined style, and mixes different styles, with the Romanesque predominating.

This town in the region of Hoya de Huesca in the community of Aragón appears mentioned for the first time in 1104, in a concord between the bishop of Huesca and the abbot of Montearagón. Its origin is Roman, a link that still survives in the tradition of the "vote", which unites Alerre with six other towns that surround Huesca and form the "Seven Places". This historical community was united by the promise of a vote destined to ask for the holy protection of a saint, Lorenzo, son of two Roman subjects who lived in a Roman settlement near present-day Huesca, and who was martyred in Rome. Alerre has an interesting costume and footwear museum, located in the keep, next to the town hall, and which collects more than 3,000 pieces from all over the world, donated by the Scottish diplomat of Spanish origin Tomás Moyano.

The ruins of the Watchtower tower, probably built between the 9th and 10th centuries, are of Islamic origin. The tower, with a square plan, preserves only three walls, since the south wall collapsed. It is also known as the Four Corners Tower. It is located in a privileged place, on a hill that overlooks the Sotonera reservoir. Its elevated position allowed visual communication with the Tower of San Mitiel or the Bolea castle.

Montmesa is a municipality in Huesca in the Hoya de Huesca region, in the community of Aragón. Since 1845 it belongs to the municipality of Lupiñén-Ortilla. Located between the Sotón and Astón rivers and close to the Sotonera reservoir, Montmesa is characterized by its traditional stone and rammed earth buildings, some dating back to the 18th century. The church of San Miguel Arcángel that crowns the town is a Romanesque temple from the 12th century modified centuries later (16th-18th century), whose Mudejar tower is unique in the area.