We have similar thing in Czechia, statue of František. Legend says, that if you touch him, You'll get pregnant within a year.

Slightly related, but apparently people also do this to the testicles of the Charging Bull statue in New York City.

Every bronze statue that has balls ever. Just this week I noticed a statue in the city I live in that has shiny, polished balls.

Japan's penis festival comes to mind

These have all been surprisingly interesting statue facts!