-Berlengas Nature Reserve

Peniche is the access point for Berlenga, an island group 10 kilometers offshore from Cabo Carvoeiro. The island is only two and a half square kilometers but is the largest island in the archipelago with jagged coastline of stacks, caves and extraordinary rock formations. The islands have been designated a nature reserve, Berlengas Nature Reserve, due to its marine wildlife, cliff top flora and the thousands of seabirds that have settled the island including puffins, guillemots, gulls, and cormorants. 

-Serras de Aire and Candeeiros Natural Park

The Park stretches south from Porto de Mós covering about two thirds of the Estremenho Limestone Chain, a range of hills with typically sparse vegetation constituting olive trees and shrubs and bright white limestone rocks jutting out. It is one of the most important nesting places of the red billed jackdaw although numbers have fallen in recent years. Because the geology of the area lends itself to natural cave formations this is a very important area for bats and one of the country's largest colonies roost in the caves here. There are ten species of bats recorded in the Natural Park. 

-Tejo Estuary Nature Reserve

The Tejo Estuary is the largest estuary in Portugal and is an internationally important nature reserve and Ramsar site around the rivers Sorraia and Tejo. This is a great area for bird watching where flocks of waterbirds come to roost and feed as well as other interesting species including greylag geese, flamingo, teal, white stork, little bittern, purple heron, marsh harrier, Montagu's harrier, booted eagle. The Reserve covers 14.560 ha and is important as part of the migration route for a wide range of bird species on their way to West Africa. 

-Sintra-Cascais Natural Park

It's the mix of natural park landscape with dramatic architecture that appeals particularly here in Sintra. Elevated as the Serra de Sintra is, and slap bang in the middle of Sintra-Cascais Natural Park, historic architecture blends with exotic plants and dense vegetation. The Moors and Romans were here first, recognizing the strategic position of Sintra as a gateway. The Romantic poets Byron and Southey both waxed lyrical on the place. Not surprising, as Sintra really was one of the first hotspots of European Romantic architecture. After the 1755 Lisbon earthquake, royalty took refuge here in Sintra. 

-Arrábida Natural Park

Setúbal sits adjacent to the Arrábida Natural Park. Stunning beaches blend with estuary territory - you can expect to see dolphins, and estuary wildlife such as flamingos and storks. 
The Arrábida Marine Reserve is a hotspot for dolphin watching, boat trips and water sports such as canoeing.