This study aims to understand participant`s Environmental Psychology on Dark Tourism. As such, we sought to identify the dimensions of environmental perception and in-turn to examine the structural relationship between environmental perception, flow, visiting satisfaction, and recommendation intention. An extensive review of previous literature and empirical research were conducted. The empirical analysis was based on 275 responses. We tested the two-factors of cognitional perception and emotional perception by using Structural Equation Model and found that cognitional perception factor has significant effects on visiting satisfaction and recommendation intention. Further, visitor satisfaction has significant effects on recommendation intention. While emotional perception factor did not make significant effect on visiting satisfaction and recommendation intention. Also, both cognitional perception and emotional perception had significant effect flow. The findings of the study are as follows: 1) Flow is important role of relationship quality with dark tourism environmental and tourist; and 2) Cognitive perception is deeply involve in the sustainability of dark tourism. Theoretical and practical implications based on these findings are enclosed.