“Ha Long Bay is one of the most popular natural attractions in Southeast Asia and one of the most beautiful places in Vietnam.” (Photo: Truong Giang/VOV)

Sunset on Ha Long Bay. (Photo: Pham Huy Trung)

A panoramic view of Ha Long Bay. (Photo: onevivu.vn)

A floating village in Ha Long Bay. (Photo: VNA)

“With 1,969 islets of hulking limestone and deep, green waters that are home to myriad floating villages, this is a place where time slows to a standstill”, said CNN Travel.

There are nearly 2,000 rocky islands of various shapes and sizes in Ha Long Bay. The most prominent islands are Trong Mai and Ga Choi island, which are the symbols of the bay and Vietnam's tourism. (Photo: VNExpress)

One of the most fantastic activities is to take a sightseeing cruise to visit islands and caves. (Photo: Paradise Elegance Cruise)

Sung Sot, Dau Go, and Thien Cung are popular caves in Ha Long Bay. (Photo: lejourneyhalongcruise.com)

Luon cave is a unique place in Ha Long Bay. It’s like a tunnel through the mountain with several stalactites. (Photo: Truong Giang/VOV)

Tourists love to kayak through Luon cave to watch golden monkey playing on cliffs. (Photo: Truong Giang/VOV)

Quang Ninh Museum is an amazing destination to explore local culture, land and people. (Photo: Quang Ninh Museum)

Quang Ninh Museum is designed by Spanish architect Salvador Perez Arroyo. (Photo: truyenhinhvov.vn)