Photo taken on May 30, 2013 shows the interior of the Alcobaca Monastery in Alcobaca, central Portugal. The Alcobaca Monastery is a mediaeval Roman Catholic monastery. It was built in the reign of the first Portuguese king, Afonso Henriques, in 1153. The Alcobaca Monastery was listed by the UNESCO as a world heritage site in 1989. (Xinhua/Zhang Liyun)