File:Castelo ... - panoramio.jpg

archive.org/web/20161020044726/http://www.panoramio.com/user/662437?with_photo_id=61880786 operator: Panoramio described at URL: https://web.archive

archive.org/web/20161019190443/http://www.panoramio.com/user/6080236?with_photo_id=63689110 operator: Panoramio described at URL: https://web.archive

panoramio.com/user/184552?with_photo_id=1497011 operator: Panoramio described at URL: https://web.archive.org/web/20161011075548/http://www.panoramio

English operator: Panoramio described at URL: https://web.archive.org/web/20161023225550/http://www.panoramio.com/photo/59629390 determination method:

archive.org/web/20161031170545/http://www.panoramio.com/user/3657717?with_photo_id=110026839 operator: Panoramio described at URL: https://web.archive