A castle located in a border area that was the scene of many war campaigns. The construction of the wall, reinforced with semi-cylindrical towers, was the result of a deal between the people of Alegrete and King Dinis: the residents would build the wall, and the monarch would grant the charter. In addition to repopulating the village, Dinis built the keep and, in 1319, continued the work begun by his father, Dom Afonso III. The old town clock stood at the main gate of the old fence.

Belonging to the set attached to the Águas Livres aqueduct, it is an extensive stone aqueduct created to carry water to the Terreiro do Paço de Queluz for the royal stables' consumption. The work was created at the site of two springs: the Gargantada spring and the Pocinho spring, and served several fountains in Queluz. Built by King João V in 1731, it was only finished in the mid-19th century. The main section is 14 kilometers long, eight of which are in the municipality of Amadora.

Belonging to the set attached to the Águas Livres Aqueduct, an aqueduct, in stone, created to get water to the Terreiro do Paço de Queluz for consumption of the Royal Mews. The work was created in the place of two sources: the source of Gargantada and do Pocinho and served several fountains and fountains in Queluz. Built by d. João V, in 1731, was only to be done in the mid-19th century. The main section is 14 kilometres in length, of which eight in the municipality of Amadora.

The chapel in the village of Valdegas, dedicated to the divine Holy Spirit, deployed at the entrance to the village is a granite building, of rectangular plan oriented Northeast\/Southwest. On the main façade, with a porch, has a ported rectangular and in the elongation of the gable, a belfry. Inside this temple stands the high altar in polychrome and gilded housing and a monstrance, religious imaginary in gilt, with a monstrance rifled with a dove, representing the Holy Spirit. This is the chapel which is celebrated the mass of the feast in honour of the divine Holy Spirit.

On a platform next to the River, on an ancient Roman necropolis were still visible a few decades the ruins of a chapel that the tradition called São Sebastião. The construction of the high school and a Sports Pavilion have motivated an archaeological intervention, which in turn led to change the deployment of new equipment. Today, on site, plus a part of the Roman necropolis can be visited, is open to visitors the chapel of St. Sebastian, completely rebuilt, where is exposed the main espolio exhumed.

Mannerist parish church. Presents longitudinal plant composed of ship alpendrada and chancel and vestry and belfry adossados to side front left and right, respectively. The altarpieces are carved polychrome, which extend through the triumphal arch, the national Baroque style. The building also features vestments in masonry, except the chancel and the main façade. The interior shows intense painting on wood decor and talha and the toppings in caissons are hagiographic theme and scenes from the life of Christ.

Built in the 16th century in the place of a hermitage where the sailors went to pray, it was deeply modified after the earthquake of 1755. The main chapel is decorated with a panel of the end of the 17th century, which belongs to the experimental baroque epoch. A stone image of Nossa Senhora da Esperança and yet another image of Santa Ana, credited to the sculptor Machade de Castro, ar part of this church's assets, that also includes paintings and images from several convents.

A Mannerist building, rebuilt in the 18th century. The interior walls are covered in 17th-century blue and white tiles depicting scenes from the life of the Virgin Mary. At the back of the church is a eucalyptus grove that ends in a fountain, the Fonte da Senhora or Fonte Santa, where, according to legend, Our Lady of Atalaia appeared. The traditional symbolic "Lavagens" are still held there today during the parish's main pilgrimage, which takes place on the last Sunday in August.

Its exact foundation is unknown. However, it is mentioned in royal documents from 1320. In the 17th century, its main elevation underwent major architectural changes. It features a granite portal, a lintel, a triangular pediment topped by a stone cross, a spire at the north end, and a robust, sharp-pointed bell tower opposite, made of masonry decorated with artistic sgraffito, two eyelets, and an equal number of cast bronze bells, the oldest dating from 1772.

Built between 1570 and 1646, it has a tripartite main façade with embedded pilasters. The central part features a wide round arch forming a narthex, surmounted by three windows with three pediments. On the sides, two strong bell towers covered by domes are visible. Inside, with three naves, the silver liturgical objects and vestments woven and embroidered with gold from the 16th century stand out. It is also known as the Church of Our Lady of Expectation.