The Sierra de O Cebreiro is a mountain range located in the northwest of Spain, specifically in the region of Galicia. It is part of the larger Galician Mountains and is known for its stunning landscapes, rich biodiversity, and traditional villages. The area is also famous for its unique architecture, including the characteristic pallozas, which are round stone houses with thatched roofs. This mountain range is a popular destination for hikers and nature enthusiasts, offering various trails that showcase its natural beauty. Additionally, the Sierra de O Cebreiro is significant for its historical importance, as it is located along the Camino de Santiago, a famous pilgrimage route leading to the shrine of Santiago de Compostela.