Photos highlight the oldest citadel of Vietnam
PSNews - Built under the reign of King An Duong Vuong (around the 2nd century BC), Co Loa citadel, 20km north of Hanoi, appears to be the oldest such structure in Southeast Asia.
PSNews - Built under the reign of King An Duong Vuong (around the 2nd century BC), Co Loa citadel, 20km north of Hanoi, appears to be the oldest such structure in Southeast Asia.