This document analyzes TripAdvisor reviews to identify how tourists define the authenticity of travel experiences in Marrakech, Morocco. It conducted a semantic analysis of 361 reviews from hotels, rural guest houses, riad guest houses, and restaurants. The analysis revealed 3 classes of meaning around tourist perceptions of authenticity: originality associated with riads, singularity with hotels, and identity/projection associated with rural guest houses. The reviews showed that the type of tourism establishment influences tourists' notions of authenticity and contributes to differentiating them. Authenticity appears to be a dynamic, triangular set of characteristics around originality, singularity, and identity that shift based on tourists' experiences.