This study delineated the templestay experience in the context of the authenticity of tourism. To understand the phenomenon of templestay experience, the study applied the hermeneutic phenomenology method. Furthermore, the researcher tried to approach the experience with an open perspective in observing essential meanings and lived phenomena. From the hermeneutic guide, the study discovered “structure of perceptions (situation, emotion, thought, action),” “perceptual experiences (rational experience, sentimental experience, judgmental experience, experimental experience),” and “experiential authenticity (superficial authenticity, situational authenticity, relational authenticity, space-time authenticity, existential authenticity)” from the lived templestay experience and developed a “descriptive model of the integrative phenomenon of templestay experience.” This study suggests the possibility of discovering new phenomena by expanding the boundaries of the perceptions of the authentic experience of tourism.