Óbidos Castle is one of Portugal's most famous. The castle is situated in a city of the same name in the Leira district in the country's Centro region. The great structure was built in the 12th century on the site of an old Roman fort, following the Reconquista of Portugal by Christian forces. In 1951, the castle and grounds were designated as a national monument and restored with government funds. You can see this famous castle from above in this drone video, compliments of Pedrodrone4k.