The Blue Lagoon 1 and Phu Kham Cave in Vang Vieng, Laos, are popular attractions offering swimming, exploration, and stunning natural beauty. The Blue Lagoon is known for its turquoise waters, rope swings, and relaxing atmosphere. Phu Kham Cave, located nearby, features a reclining Buddha statue and requires a climb to reach, so accessibility can be a challenge for those with mobility issues. A visit can be enjoyed solo or as part of a guided tour, with tours often including transportation and other activities. The dry season (November to April) is generally the best time to visit, as the water is clearer and more inviting. Expect to spend around $10-$20 for transportation and entrance fees. A typical visit to both the Blue Lagoon and Phu Kham Cave lasts approximately 3-4 hours. Note that the water levels in the Blue Lagoon can fluctuate depending on the season.