Let´s celebrate the penis! That´s what the festival Kanamara Matsuri is all about. While some societies hide their fertile bits, Japan worships them. That doesn’t just mean they build temples around them—they actually put the penis on parade.
Kanamara Matsuri is a fertility festival in Japan and is held each spring at the Kanayama Shrine in Kawasaki, Japan. The exact dates vary: the main festivities fall on the first Sunday in April. The penis, as the central theme of the event, is reflected in illustrations, candy, carved vegetables, decorations and a mikoshi parade.
Combine this festival with the beautiful and more elegant blossom festivities held each Spring in Japan.
The Kanamara Matsuri is centered around a local penis-venerating shrine once popular among prostitutes who wished to pray for protection from sexually transmitted diseases. It is said that there are also divine protections for business prosperity and for the clan's prosperity; and for easy delivery, marriage, and married-couple harmony. There is also a legend of a sharp-toothed demon (vagina dentata) that hid inside the vagina of a young woman and castrated two young men on their wedding nights. As a result, the young woman sought help from a blacksmith, who fashioned an iron phallus to break the demon's teeth, which led to the enshrinement of the item.
Today, the festival has become something of a tourist attraction and is used to raise money for HIV research.
Source - Wikipedia