The International Tagus Natural Park is a Portuguese natural park that covers an area where the Tagus River forms the border between Portugal and Spain, encompassing parts of the municipalities of Castelo Branco, Idanha-a-Nova and Vila Velha de Ródão.

Considered one of the most important in Europe, the International Tagus Natural Park has a rich natural heritage due to its biodiversity and still in a pure state.

The park's vegetation includes cork and holm oak groves and willow galleries (Salix sp.) along the rivers. It is an important nesting area for birds, with bonelli's eagle, golden eagle, griffon vulture and Egyptian vulture.

It also houses populations of black storks, a rare species in Portugal. The mammals in the park include the European otter, the wildcat, the red deer and the rider. Many of these are rare species, some are even endangered, so this is a protected area.

In the International Tagus Natural Park hundreds of animal and plant species with traditional human nucleus coexist harmoniously. Here and beyond, there are rustic and almost unpopulated villages, but there are also renovated villages, with careful houses. All waiting to be unraveled by you.