A great piece of ancient Sri Lankan glory. Done by King Dutugamunu in 15th - 16th BC. The best time to visit the chaithaya is early morning or late evening. The floor (Dagaba maluwa) of the chaithaya is covered with tiles made of rock and same get heat up with the rise of the sun and at noon it is too hot you will find it very difficult to walk on those tiles.
When you are entering the chaithaya premises be careful to dress in proper manner since this is a very sacred place and without an appropriate dress you will not be allowed to enter the premisses by the security (police) .