Leave Hanoi and travel to Ha Long Bay, one of Vietnam's great natural showpieces and a UNESCO World Heritage site. Board your Feature Stay for the night, a traditionally styled cruise boat with modern comforts, then set sail past limestone karsts, scattered islands and calm green water. Lunch is served on board, and the afternoon may include a cave visit, a fishing village stop, swimming, beach time or optional kayaking, depending on conditions. Tonight, dinner on deck gives the bay a softer, quieter kind of magic.