เวียดนาม, ฉัน, แม่น้ำ, เรือ, ศูนย์มรดกโลกของยูเนสโก, เอเชีย, วัฒนธรรม, น้ำ, เมืองโบราณ, ประวัติศาสตร์, ธรรมชาติ
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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