[2][3] Around 1306, King Denis ordered the fortification of the town: it was at this time that construction of the castle began, that included the main structure, walls and gates.

[2][3] After the rise of John I of Portugal to the Portuguese throne, the castle and associated lands were given to the constable Nuno Álvares Pereira, who later passed them on to his grandson.

[2][3] The reconstruction campaign during Manuel's reign, beginning in 1516, resulted in the fortification with four cylindrical towers defining the rectangular perimeter by Francisco de Arruda (completed in 1531).

[2][3] Between 1930 and 1940, were the first public works to recuperate and renovate the grounds and castle of Evoramonte, under the supervision of the Direcção Geral dos Edifícios e Monumentos Nacionais (DGMEN).

[2] On 1 June 1992, under Decree 106F/92, this building was transferred into the stewardship of the Instituto Português do Património Arquitectónico (IPPAR), in order to rehabilitate and monetize the structure.

[2] The castle crowns the escarpment of Serra d' Ossa, with a commanding view of the local and distant routes, dominating one of the largest squares in Portugal: the municipality of Estremoz.