Under the plan, the culture ministry will work with the Vietnam National Commission for UNESCO on necessary procedures for the dossier.
In May, Trang An was recognized as a national heritage.
The 10,000 ha site includes three areas: Trang An Ecological Site, Tam Coc-Bich Dong Site and former Hoa Lu Capital Area. It has around 500 species of flora, 73 species of birds and 41 species of other animals.
What the stars mean:
★ Poor ★ ★ Promising ★★★ Good ★★★★ Very good ★★★★★ Exceptional