There are literally thousands of ceramic votive phalli at Mara Kannon Shrine in Tawarayama, a small onsen town in the mountains of northern Yamaguchi Prefecture.
Mara is crude slang for the male member, and Kannon is the Buddhist goddess of mercy but now a torii stands in front so it is classifies as a shrine.
The phalli are left by people who are praying to have a child, so it is known as a fertility shrine now, but it has a rather macabre origin which I will explain in a later post.....
Fertility shrines are a pet interest of mine and though the vast majority of them disappeared in the early Meiji Period there are still quite a few hidden away in the backwaters of rural Japan...