We also had the chance to visit Halong Bay , a stunning natural wonder and UNESCO World Heritage Site. It was about a 3-hour drive from Hanoi. Our day started early—we were picked up around 8 AM and made a short stop at a pearl farm along the way. There, we learned how pearls are cultivated from oysters, which was surprisingly fascinating. From the pearl farm, we headed to the harbor and boarded our Halong Bay cruise . The boat was mid-sized—neither too big nor too small—and very comfortable. They served a delicious Vietnamese-style seafood buffet that was both healthy and refreshing. Our first stop was Titop Island , where we got to burn off our lunch with a short hike up to the top for a panoramic, bird's-eye view of Halong Bay. We were blessed with sunny weather, so the visibility was crystal clear, and we could fully appreciate the dramatic landscape of limestone karsts and emerald waters. Next, we went kayaking for about an hour...