It is located between the municipalities of Ovar and Espinho, and is also known as Barrinha de Esmoriz. It is a medium-sized coastal lagoon, rare to find along the northern coast of Portugal. Furthermore, it constitutes an area of ​​ecological, scenic and recreational interest, possessing great ornithological and plant diversity.

A river approximately 130 kilometers long, serving as a border between Portugal and Spain for twenty kilometers. It originates in Spain, in the Serra das Mesas mountain range, and flows into the Douro River near Barca D'Alva.

A large lagoon, fed by the waters of the Cértima River and located in the Águeda Valley, also known as Requeixo Lagoon. It is a vast and shallow area with abundant aquatic vegetation, notably bulrush, mainly used in basketry. Among the fish species found here are eel, barbel, and carp.

A well-known waterfall that plunges approximately 60 meters from the top of the Freita mountain range. It is located between Vale de Cambra and Arouca. It can be appreciated from a viewpoint near Castanheira, on the opposite side of the slope.

Located near the confluence of the Douro and Tâmega rivers, the Entre-os-Rios Thermal Baths have been a sought-after destination for relaxation and treatment of various ailments since the late 19th century. The rural landscape, nestled within a beautiful and leafy park of ancient trees, lends this relaxing character. The thermal spa is supported by two hotel units. The waters are especially indicated for respiratory infections, rheumatic and musculoskeletal conditions.

The São Vicente Thermal Baths, located in Penafiel, next to the Douro River, boast some of the most sulphurous waters in Europe, making them a unique destination for those seeking to combine health and well-being. Here, you can enjoy the therapeutic properties of the thermal water, revitalize your mind and body through the dynamic pool, or simply relax and find harmony and balance in the spa. All this is set within a magnificent wooded and verdant park, with centuries-old trees, where you will find the best-preserved Roman Baths in the country, whose origins date back to 315 AD, as well …

Located within the National Ecological Reserve, the Pataias Lagoon is the main wetland in the municipality, and one of the main migratory points for aquatic birds. There, it is possible to observe these species through the observatory, and also discover a variety of fish. On the shore, there is a picnic area where you can enjoy a picnic in contact with nature.

A dam in the parish of São João Baptista, which shelters the Abrilongo stream. It was built with the aim of serving as a base for an extensive irrigation system, however, due to the excellent conditions it offers, it also allows for the practice of sporting activities.

A mixed-type dam (earth and buttress) located in a rugged area of ​​fields and olive groves on the Caia River. Sports and leisure activities are restricted to certain areas of use.

A lagoon of approximately 1.3 km² with an elongated shape, formed by two main lagoon bodies connected by a narrow channel. Surrounded by vast sandy cliffs, this location has calm waters and serves as a refuge for migratory, aquatic, and wading birds. It is believed that this lagoon may have been the Tagus River's route to the sea, located 150 meters away. This fish spawning ground has protected dunes.