It’s perhaps Vietnam’s most iconic view – the sight of the mesmerizingly beautiful bay punctuated by tiny, foliage-covered limestone islands. As you take in the sumptuous beauty of this site, it’s clear why it’s UNESCO World Heritage-listed – it surely offers the best of the natural world as well as human intervention. While cruising down the bay is an absolutely jaw-dropping experience, don’t forget to leave time to explore the massive caverns and caves, which are covered in stalagmites and stalactites.