Attractions and Places To See around Alter Do Chão - Top 7

As Termas da Sulfúrea, located in Cabeço de Vide (Portalegre district, Alto Alentejo), are famous for possessing a unique natural mineral water in Portugal, with therapeutic properties used since Roman times. The current complex combines health, classic thermalism, and modern wellness programs.

History and Construction Age: Built at the end of the 1st century AD (Roman period). Ancient Function: It connected Olissipo (Lisbon) to Augusta Emerita (Mérida). Structure: It has six large round arches and a flat horizontal deck. Size: It measures about 117 meters in length and 6.70 meters in width. Visit and Current State Conservation: It is almost perfect and has remained very strong over the centuries. Access: It is safe and free to walk on. It is located near the EN 369 road. Surroundings: There is a rest area with picnic space near the site.

The Termas da Sulfúrea in Cabeço de Vide (Fronteira, Portalegre) operate from March 16 to November 15. They use hyperalkaline sulfurous waters (pH 11.55) indicated for rheumatological, respiratory, and skin diseases. Practical Information and Opening Hours Thermal Season: From March 16 to November 15. Opening Hours: Every day from 08:00 to 12:30 and from 16:30 to 19:00. Telephone Contact: +351 245 634 112. Characteristics and Therapeutic Indications Water Type: Sulfurous, hyposaline, hyperalkaline, and with a high silica content. Spring Temperature: Emerges at 19ºC. Main indications: Osteoarticular diseases, rheumatism, respiratory tract (asthma, rhinitis), and skin conditions (psoriasis, eczema).

The Termas da Sulfúrea in Cabeço de Vide (Fronteira, Portalegre) are open from March 16 to November 15. They use hyperalkaline sulfurous waters (pH 11.55) indicated for rheumatological, respiratory, and skin diseases.

Located in the parish of Seda, in the heart of the Alentejo, the ruins of the walls that surrounded the ancient castle of Seda remain determined to preserve their ancient history. Without official evidence, some studies point to the existence of a castro of the Lusitanian tribe, occupied by Roman troops who would have erected a fortification there. The Roman presence in the region is well-known, and easily attested to by the Vila Formosa Bridge (1st and 2nd centuries), milestones, and the military road that would have connected Lisbon to Mérida. In 1160, King Afonso Henriques conquered the village, which at the time was called Arminho, from the Moors and donated the fortification to the Templars. This is the date that marked the beginning of the village's original enclosure. During the reign of King Afonso III, the village was handed over to the Order of Aviz and was later elevated to the status of a town, even serving as the municipal seat until 1836. The castle, however, gradually lost importance, and only a section of medieval wall, reinforced with turrets, has survived to this day. It has been classified as a Property of Public Interest since 1982.

The Castle of Alter do Chão, in Alentejo, is located in the parish of Alter do Chão, in the town and municipality of the same name, district of Portalegre, in Portugal. In the historic center of the town, this castle is representative of 16th century medieval architecture, when it cooperated with the neighboring Castle of Alter Pedroso in the defense of this region. Alter do Chão Castle has been classified as a National Monument since 1910.

Magnificent medieval castle which was reconquered from the Arabs during the reign of D. Afonso II. It is classified as a National Monument.

The Sanctuary of Nossa Senhora da Vila Velha is a beautiful Sanctuary with a splendid viewpoint. Our Lady of Vila Velha is the patron saint of the beautiful city of Fronteira. The devotion to this patron saint was reinforced when in 1694, during a pilgrimage, lightning fell during a feast and no one was injured.