The concept of tourism authenticity is dynamic. In the past, tourism authenticity is the cultural authenticity. But, tourism authenticity is now considered in four approaches; which are objective authenticity, constructive authenticity, existential authenticity, and performative authenticity (Zhu, 2012). But, in Thailand, authenticity in CBT is discussed only in objective authenticity; which focuses merely in originality of local assets. In many cases, there are attempts to return back local heritage to their original condition; or to preserve the existing condition. These attempts may ignore accumulating value through time of the local heritage. In fact, cultural changes are authentic themselves. The changes may be at different rate, but they do change. Cohen (1988) noted that people may have different interpretations of authenticity, and recognition of that authenticity also changes through time; so called negotiated authenticity.