Gate to a Citadel in Hue, Vietnam. Citadel in Hue is enlisted in UNESCO’s World Heritage Sites. Stock Photographsby mathes2/35
View of the Citadel with Muhammad Ali Mosque from Al-Azhar Park Stock Photographyby LeonidAndronov1/15
Temple of Hercules, Roman Corinthian columns at Citadel Hill, Amman, Jordan Stock Photoby VLADJ551/10
Forest and field scene with mist and fog with ancient castle visible in background Stock Imageby Veneratio8/160