The Castle of Serpa is a medieval castle located in the civil parish of Serpa, in the municipality of Serpa, Portuguese district of Beja.
Wikipedia https://en.wikipedia.org/wiki/Castle_of_Serpa
Address 12 Rua da Figueira, Serpa 7830406, Portugal
Coordinates 37°56'40.956" N -7°35'50.577" E