Castle situated on a rugged Hill on the western edge of the Sierra de Ossa. The original fortification remain the fence and gates of the reign of King Dinis. Inside the walls the highlight goes to the Paço de Hommage, which forms, with a large donjon regular quadrilateral. The paço project takes inspiration from the Italian Renaissance palaces.

Giraldo's Castle is one of the rare villages known in Alentejo which confirmed a near-continuous occupation since the third until the end of the first Millennium before Christ. Is a natural fortress, fortified with defensive walls.

Fortified settlement of pre-Roman times, located in the foothills of the Southwest slope of the Serra do Larouco, among o Corgo o Corgo and do Fojo of the Goatherd, 1090 meters above sea level. Are all over the lot traces of structures alignments, with higher incidence on the upper deck, where you will find the highest concentration of ceramic materials. There are also remains of walls. The North and Northwest defence was natural.

Of the Castle's Doors all that is left is the entrance arch and a pillory.

This is a pine pillory. Form the original one it only remains the base and the column.

This pillory has a base composer by two square and flat steps in which the first one is covered by the floor. The prismatic shaft fits directly on the superior step. The section is square, slightly chamfered on the inferior part narrowing towards the top. The finish is composed by a cube above which settles another parallelepiped with lower faces encircled by rectilinear frames with traces from spherical finishing.

This pillory has four square steps, one monolithic column with a square base and an octave shaft. In the capital it is possible to see a round frame decorated with vegan symbols. Above the capital there are pinnacles which are remarkable pieces decorated with vegan symbols.

Donjon of the castle of Estremoz, with 27 feet high, built of white marble. It is thought that it was a work that went through three reigns: d. Afonso IV, d. Pedro and d. Fernando and it was the latter who designated it "Tower of the three crowns", the name by which this tower is known.