Located in Coja, Arganil, from this Cyclin' Portugal Centre you can discover the natural heritage of Serra do Açor, the fifth highest mountain in mainland Portugal, which constitutes the northern quadrant of the territory of the Schist Villages, ensuring the continuity of the Central Cordillera, starting from Serra da Estrela. It is the mountain formation in schist that reaches the highest altitude in the Portuguese mainland: the Cebola, at 1438 m. the Serra do Açor is a concentrate of natural beauty, it is a mountain cracked by dozens of limpid water streams and small and beautiful villages that deserve to be discovered, as the Schist Villages of Benfeita and Vila Cova de Alva are examples. In this area it is also possible to find one of the relics of the native Portuguese forest, the Margaraça Forest, which integrates the Protected Landscape of the Serra do Açor and the Natura 2000 Network.