Hallyu, which began in the 1990s with dramas and movies at the center of surrounding Asian countries, has recently expanded not only in Asia but also around the world with the popularity of K-pop centered on idol boy and girl groups. It has already been proven through prior research in the tourism sector that celebrities like idols are stimulating and affect tourism motivation and intentions, but there is a lack of research on how idol fans visit certain places related to idols and attachment to places. This study reflects the current K-pop culture in which idol fans visit places and tourist destination related to idols, and based on the attachment theory, the attachment to idols, the main player of Hallyu tourism goes beyond certain places to see the preference of tourist destinations and the effect of online eWOM. The data was collected for the Chinese, who are the fastest to influence and spread idol culture. We obtained 440 data from online surveys and analyzed it through Smart PLS to analyze research models designed from theoretical backgrounds. The analysis showed significant results from all hypotheses, especially the attachment to idols has a stronger impact on emotional attachment than a cognitive attachment, which can be seen as a strong emotional attachment to specific objects. In addition, the impact on attitude (preference) and behavior (online oral intentions) to tourist attractions was confirmed, and the emotional location attachment was highly influenced by the two dependent variables compared to cognitive location attachment. Therefore, this study provides academic implications for the formation of place attachment by exploratory looking at the process of transferring from idol attachment to idol attachment to related places from the idol fan perspective. The study also identified a series of processes in which idol fans visit relevant locations, providing a basic framework that is practical for new businesses.