Not every temple houses Sacred Relics, and even if some of them do, they are not Lord Buddha's. Sri Dalada Maligawa (Temple of the Sacred Tooth Relic) in Kandy is one of the most sacred places in the whole Sri Lanka (and in the world as well) because it houses the Relic of Tooth of Lord Buddha. Even if you are not a Buddhist by birth, you should surely visit this temple, which looks like a palace, at least once in your lifetime.