Castle of Silves

The Castle of Silves is a castle in the civil parish of Silves in the municipality of Silves in the Portuguese Algarve. It's believed that the first fortifications were built upon a possible Lusitanian castro, by the Romans or Visigoths. Between the 8th and 12th or 13th century, the castle was occupied by the moors, and expanded, is one of the best preserved of the Moorish fortifications in Portugal, resulting in its classification as a National Monument in 1910.

• http://en.wikipedia.org/wiki/Castle of Silves