4 Best Sights in Setúbal, Sintra, the Estoril Coast, and the Setúbal Peninsula

A dramatic sight against the greenery of the forest, this sprawling 16th-century monastery is built into the hills of the Serra da Arrábida. The glorious views take in the white sandy beaches and turquoise waters of the coast. Tours, which must be booked in advance, take place on Wednesday, Saturday, and Sunday.

Occupying the entire southern coast of the Setúbal Peninsula is the Parque Natural da Arrábida, dominated by the Serra da Arrábida—a 5,000-foot-high mountain range whose wild crags fall steeply to the sea. There's profuse plant life at these heights, particularly in spring, when the rocks are carpeted with colorful wildflowers. The park is distinguished by a rich geological heritage and numerous species of butterflies, birds, and mammals (you might spot foxes and mongoose, and even wild boar). The park is a favorite destination for bikers, hikers, horseback riders, and adventure-sports enthusiasts. There are also some lovely hidden beaches for those prepared to put in the footwork.

This small fishing village is a popular destination for Lisboetas, who appreciate the beautiful beaches, whose wonderfully clear blue-green waters and white sands create a dramatic contrast with the green, pine-covered hills. A handful of good fish and seafood restaurants offer terraces with views out to sea. Due to the high number of visitors, cars are banned mid-June to mid-September, but free buses run here from Setúbal to Portinho da Arrábida and other picturesque beaches. Parking can be difficult even outside peak season.

This 15th-century Church of Jesus, perhaps Portugal's earliest example of Manueline architecture, was built with local marble and later tiled with simple but affecting 17th-century azulejos. The architect was Diogo de Boitaca, whose work here predates his contribution to Lisbon's Mosteiro dos Jerónimos (Jerónimos Monastery). Six extraordinary twisted pillars support the vault; climb the narrow stairs to the balcony for a closer look at the details, which would soon become the very hallmark of Manueline style. Outside, you can still admire the original, although badly worn, main doorway and deplore the addition of a concrete expanse that makes the church square look like a roller-skating rink. The church's original monastic buildings and Gothic cloister—on Rua Balneário Paula Borba—house the Museu de Setúbal, a museum with a fascinating collection of 15th- and 16th-century Portuguese paintings, several by the so-called Master of Setúbal. Other attractions include azulejos, local archaeological finds, and a coin collection.