The Dambulla Buddhist museum at the entrance of the cave paintings is a UNESCO World Heritage. The museum itself looks like a park attraction. You go through a kind of large snapdragon to a small space they have built and painted the caves, which are higher on the mountain. Museum admission is not included in the entrance of the caves, which costs $10. So it seems a bit much to not have much information at the end. We had the Lonely Planet that explains very well the differences between the caves.