Castle of Viana do Alentejo - Credit: Wikimedia Commons
The Castle of Viana do Alentejo () is a gothic castle constructed during the reconquest and settlement of the central region of the Portuguese Alentejo, located in the parish of Viana do Alentejo, municipality of the same name. Although a relatively low-profile design, in comparison to its contemporaries (such as the Castle of Portel or Castle of Feira), the structure served the period of strife associated with expansion of Portuguese forces/authority into the southern Algarve. Read more on Wikipedia
Source: en.wikipedia.org