The purpose of this study is to examine the relationship between the two types of environmental attitudes(i.e., environmental knowledge and environmental sensitivity) and environmental behaviors among the tourists at Jeju Gotjawal Provincial Park. To achieve this goal, we collected data from the park visitors to obtain a total of 291 surveys. The result of our analyses showed that environmental knowledge had positive effects on environmental sensitivity and environmental behaviors. Also, environmental sensitivity had a positive influence on environmental behaviors. Our findings supported that the environmental attitudes can be understood as multi-faceted variables, which can be both cognitive (knowledge) and emotional(sensitivity). Further, environmental behaviors at the park are predicted by both types of environmental attitudes. Thus, park managers should provide more information about the park and take care of visitors’ emotional responses to promote more engagement in environmental behaviors.