Ha Long Bay, a UNESCO World Heritage site in Vietnam, is famed for its stunning limestone karsts and emerald waters. Accessibility varies, with boat tours being the primary way to explore the bay; some boats offer wheelchair access, but it's best to confirm in advance. Both solo and guided tours are available, with guided tours providing more in-depth information about the bay's geology and history. Peak season is typically from March to May and September to November, offering pleasant weather; avoid the monsoon season from June to August due to potential storms. A day trip can cost between $50-$150 depending on the tour type and inclusions. A typical visit duration ranges from a day trip to a multi-day cruise, allowing for more extensive exploration of the bay's caves, beaches, and floating villages. Consider an overnight cruise for a more immersive experience.