The study was performed to identify the factors influencing willingness to pay visitors of Pamanto Mantar in West Sumbawa Regency, West Nusa Tenggara Province by using Travel Cost Method (TCM) analysis. The variables used in this studi were Income, Frequency of visits, Duration of visits, and Cost. Using primary data and interview as mani as 104 respondents, selected by purposive random sampling technique. The results of the analysis showed that Income variable significantly influencing WTP, Frequency of visits variable does not significantly influencing WTP, Duration of visits variable does not significantly influencing WTP, Cost variable does not significantly influencing WTP. But, after do the Simultan test the results showed that the Income, Frequency of visits, Duration of visits, and Cost simultaneously have a positive and significant influence on WTP.