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R. de Santa Cruz do CasteloCastelo de São Jorge is most popular around 1 PM on Saturdays. Visitors usually stay 45 min to 2,5 hr here. It's most quiet on Thursdays.
Castelo de São Jorge (built in the 11th century) sits at the top of a hill with more than two thousand years of history. Covering an open-air area of approximately three hectares, the site contains remains of various human occupations from the 7th century BC to the present day.
For more info visit the website or checkout Google Maps.