The Gamgyul Museum in Seogwipo shows the history of Jeju tangerines and the many varieties grown on the island. A cafe sells tangerine bread and drinks, and tangerine trees from around the world are grown in a greenhouse. The exhibition hall explains the history of Jeju tangerines, and the second-floor cafe looks out over the sea. The tangerine-picking experience is only available at certain times of year, so check before visiting.