Monfragüe National Park is considered one of the best preserved natural areas of Europe. It is located in the province of Caceres, and occupies an area of 17,500 hectares. Divided in two by the River Tagus and its tributary, the Tietar, the park is home to valuable areas of forest and Mediterranean scrub.

Varying with the altitude, which never rises above eight hundred meters, and with the terrain, the landscape of the plains is mostly wood pasture, with cork oak, holm oak, and permanent grassland dotted with rock rose. The steeper slopes of the mountain offer a rich variety of vegetation which has remained virtually untouched for centuries and provides a fine picture of the original Mediterranean woodlands. The shadier areas offer a varied shrub land with heather, gorses, oaks, olive trees, gall oaks and the arbutus or strawberry tree. The rocks and crags are covered with junipers clinging tightly between the cracks. The rivers running through this site also offers a variety of riverbank vegetation including ashes, willows and alders.

There are over 200 species of invertebrates to be found in Montfragüe, as well as some magnificent bird colonies. These include black vulture, imperial eagle and black stork, which has converted the area in a major European birdwatching site. There are also beautiful panoramic views, such as the one from the castle, or the Salto del Gitano - "Gypsy's Leap". This area has been named a Biosphere Reserve and Special Protection Areas for Birds.