As of 2015, there is an estimated 7.2 million Korean people living in the world in 170 countries outside of the Korean peninsula. More than 85% of Koreans overseas have established Koreatowns and have been residing in countries such as the United States, Japan, China, and the Commonwealth of Independent States (CIS). Koreatowns are ethnic Korean enclaves that transmit Korean culture, and Korean festivals are events providing Korean culture resources for the community. In order to introduce Korean culture to mainstream society, Koreatowns play an important role. In particular, Korean festivals held in Koreatowns are important cultural resources for overseas Koreans. The main research subjects in this paper are the festivals of overseas Koreatowns, particularly the ‘New York Korean Harvest and Folklore Festival,’ which has been held annually for 35 years by the Korean American Produce Association of New York. This paper focuses on using overseas Korean festivals as tourist resources by using digital technology to organize humanity knowledge and constructing knowledge content. Knowledge content is a specialized area of cultural contents. Wikipedia is an effective platform to display knowledge contents and Wikipedia will be tourist resources on overseas Korean festivals.