One of the best places to visit in Vietnam is Ha Long Bay. It's in Quang Ninh Province and is famous for its beautiful scenery. Imagine thousands of tall limestone islands sticking out of the green water. You can take a boat ride to see these amazing formations up close. There are also caves to explore, like Surprise Cave and Thien Cung Cave, with stunning rock formations inside. You can go kayaking, swim in the calm waters, and visit villages where people live on floating houses. Ha Long Bay is a must-see for anyone who loves nature and adventure in Vietnam.