Sōfuku-ji Temple. This temple was a bit unkempt though
there were people tidying it while we visited.
Some of these temples and places in temples are used for
specific kinds of prayers. Sayaka says that this prayer
board is about a husband who cheats, placed by a wife who is
asking for something bad to happen to him.
There were loads of similar prayer boards here -- you can make
out a few others in this picture.
Curiously, the large collection of these boards is on the
otherwise blank back side of this building.