Ha Long Bay Tours, Ha Long Bay Cruise Tour in Vietnam The best cruises in Halong bay, chosen by our experts, including luxury cruises, mid-range cruises, budget hotels and Halong bay cruise deals.... HALONG BAY CRUISE For many, the seascape of Ha Long Bay is synonymous with Vietnam. Cruises sail emerald green waters among thousands of rugged islands and islets, stopping at spectacular caves through which visitors can wander, viewing impressive, centuries-old formations. Ha Long Bay's mystical beauty has made it a bucket list attraction within the country, but it's still possible to find secluded corners to call your own.