Also a UNESCO World Heritage Site, this national park in northern Vietnam is home to 1,240 square-miles of lush rainforest, limestone karst mountains, underground rivers, and a cave system that extends to an incredible 43 miles. This site is a vital eco-region, and is one of the nation's most stunning natural attractions.

This historic town in central Vietnam is filled with cultural attractions. See the traditional houses, the colonial architecture, and the lovely Japanese Covered Bridge in the Old Town. Then visit the Central Market, and Hoi An's many specialist tailors. In the evening, hire a sampan boat, cruise the river, and watch as hundreds of lanterns light up the town.

These geographical marvels are a must-see, featuring Saharan-like red and white sand dunes. You'll find many tour operators run day trips throughout this region, but you can easily explore at your own pace if preferred. Sled down the dunes, race across them in an ATV, or simply snap some pics at sunset. Then check out the gorgeous beaches nearby.

Located near the Chinese border, Halong Bay is a truly stunning natural attraction. Featuring 1,600 limestone islands and islets, this UNESCO-listed site covers an area of over 930 square-miles. The views are fantastical, and the area has been featured in numerous films. Access the area via a helicopter transfer from Halong City, and enjoy a luxury cruise across the bay.

The Quang Binh region is full of thick jungle terrain and is home to hundreds of deep caves. These include the largest cave in the world, known as Hang Son Doong. The cavern is so vast that a skyscraper could fit inside! The nearby town of Phong Na is a hub for caving adventures and tours of this area.