Railay Beach, a stunning peninsula in Krabi, Thailand, is renowned for its dramatic limestone cliffs, pristine beaches, and relaxed atmosphere. It's uniquely accessible only by longtail boat from nearby towns like Ao Nang or Krabi, making it feel secluded yet easily reachable for a typical cost of 100-150 THB per person per trip; once there, everything is walkable. Visitors can easily explore solo, enjoying the beaches (Phra Nang is a highlight), the Diamond Cave, and the viewpoint, though guided tours are popular for activities like rock climbing, kayaking, and island hopping. The best time to visit is during the dry season, from November to April, as the monsoon season (May-October) can bring heavy rains and rough seas affecting boat travel and outdoor activities. A typical visit duration can range from a full day trip to 2-3 days to fully immerse in its beauty and partake in various activities. Other insights include the absence of cars, a focus on natural beauty, and a range of accommodation and dining options from budget to luxury.