Arrábida Natural Park

Description:

Located next to the sea, between Setúbal and the fishing town of Sesimbra, 50 km south of Lisbon, Arrábida Natural Park has incomparable natural beauty, where the blue of the sea alternates with the white tones of the chalk cliffs and the depths of the green vegeta-tion that covers the mountain range.
One of the main attractions of the Park is the wealth of its indigenous vegetation. One of the rare examples of Mediterranean maquis in Portugal can be found here, and its preservation was one of the reasons which led the Arrábida zone to be considered as a genuine international scientific relic. Rich in peculiar biodiversity, this natural hotspot together with the neighbouring estuary of Sado river preserve their own singularity and beauty.
In addition to the Serra da Arrábida, the Park also includes other mountain ranges such as the Serra do Risco, which contains the highest peak along the Portuguese mainland coast -- it is a magnificent cliff measuring 380 m high, that overlooks the sea, from which it is possible to appreciate an unforgettable panoramic view over the Atlantic.
The action of the sea against the mountains has originated a line of beaches character-ised by fine sand and transparent waters, that we might otherwise believe could only be found in the Mediterranean, such as Figueirinha, Galapos and the Portinho da Arrábida.

Adapted from: https://www.visitportugal.com/en/NR/exeres/B1508929-5EDF-4187-B8B8-9349F1C48485