The Penis Festival is a rather strange event, but in Japan and specifically in the City of Kawasaki, the first Sunday of April, it is celebrated the Kanamara Matsuri ie “Festival of the Steel Phallus”.
Surfing the web I found the existence of a Theme Park “somewhat” particularly given that its theme is sex, it is the erotic park of Jeju, Loveland forbidden to minors of 18 years.