Ribeira de Seda originates in Serra de São Mamede and crosses the municipalities of Portalegre and Crato, entering Alter do Chão and then flowing into the Maranhão dam, in Avis.

Occupying a total area of 35 hectares, the Biological Park of Vila Nova de Gaia aims to be a center for environmental education, with a pedagogical purpose that involves understanding the landscape of the region and the contrast between the agroforestry landscape and the urban surroundings. Thus, the visitor can contact with hundreds of animal and plant species in the wild. It also has a recovery center for animals found injured or held in captivity illegally, and a plant nursery.

Oriental restaurant, inserted at the Mall who specializes in sushi. Works on caster system, thereby allowing the customer to choose what is passing in a treadmill.

Spacious and very nice, some sources of fountain with Palm trees.

Small space with a few tables and benches, grills for picnics and a source.

This source in carved stone stands on the stairs of the Santo Antonio Chapel.

Source dated 1942, with a spout, a rectangular base and banks on the sides.

Source with fountain situated in the Park of the fence, and surrounded by green space.

Source of circular tank, located in the sanctuary of our Lady of prayer.

Small white-washed and only source with a spout at ground level.