Monumento Natural das Portas de Ródão

Downstream from Vila Velha de Ródão, the Portas de Ródão (Ródão Gates) is an imposing geological formation where the Tagus River breaks between two steep walls (approximately 170 meters high) into a deep lake, carved by a supposed ancient waterfall that gradually disappeared until the river reached the lake's level. Besides being home to the largest colony of griffon vultures in the country, it is a privileged location for fauna and avifauna research, where 116 bird species can be observed, many of them considered endangered and some rare.