turtle tower, the of viturtle tower, the of vietetnam, at twilight period at hoan kiem lake or ho guom or sword lake

architecture asia asian blue buddhism capital celebration center city close culture dark guom hanoi history hoan illuminated kiem lake landmark landscape light long mausoleum monument night noi old pagoda period pillar red reflection rua sword symbol temple thap tortoise tourism tourist tower travel turtle twilight vietetnam vietnam vietnamese view viturtle water