View of Gulhane Park in Istanbul, Turkey

Photo taken on April 22, 2019 shows the Bosphorus Strait seen from the Gulhane Park. Gulhane Park was first built as the outer garden of the imperial Topkapi Palace located at the center of Istanbul. As one of the most ancient city parks in Istanbul, it was opened to the public in 1912. (Xinhua/Xu Suhui)