The county region of La Hoya de Huesca is that area of transition between the pre-Pyrenees, the foothills of the mountain ranges, and the Ebro valley. A large portion of the territory, about a third, is located in the mountains with large forest areas, while the rest consists of great plains of cereal crops. At the centre, is the provincial and regional capital, the city of Huesca.
The vertical walls of the Mallos de Riglos rising to 300 metres in height, close to the small village of Riglos and the Gállego river, are limestone conglomerates formed in the Tertiary era. Later on they were eroded by water, rain and wind to form the walls we can see today; these are reddish in colour because of the iron minerals and clay they contain and are quite spectacular at sunset.
Riglos and its ridged cliff formations are a paradise for climbers. They are internationally famous amongst climbing enthusiasts. They are also a paradise for birds of prey who nest and breed in the many hollows in the ridges. These birds, mainly protected birds of prey, can be seen flying over the territory.
The Castle of Loarre is a Romanesque Castle and Abbey located near the town of the same name. It is said to be the oldest fortified castle in Spain.
It was built in the late 11th century on the orders of King Sancho Ramírez I of Aragon, on the remains of an old Roman fortress. It is considered to be the most important Romanesque fortress in Spain. It has an irregular floor plan and a double wall with cylindrical towers. The 12th-century Romanesque church of Santa María is on the interior, and has three naves and a barrel vault. It has capitals decorated with Roman iconography. It was first a royal residence, and later an Augustinian monastery.