A blog post from Rurousha on "The Six Jizo of Edo" made me looking for this particular photo. (I have another one taken at Zojoji but I'm not going to use that... anyway, this is a happier one) ^^
Jizo, the protector of women, children and travelers in the six realms of existence. Jizo is often depicted as a child-monk or as a pilgrim carrying a staff with six jingling rings (like the one Miroku in Inuyasha carries around, anime fans heh heh) to annouce his friendly approach.
You find Jizo at intersections of roads and paths so that the correct way is chosen. He is, you can say, found at boundaries between places, both physical and spiritual. Between the living and those who had passed on.
Jizo is special to pregnant women and to those whose children have died. You may see Jizos dressed with bibs around their necks and mostly red. Red symbolises safety and protection, and it expels demons and illness.
Now... I wonder when I'll ever make a post about Jomyo-In temple? Gah! I haven't even started on the Kamakura Daibutsu too!
It's not as if I'm going all intellectual and fact-correct in any of my posts anyway. I'd just end up reading too much information and posting 1/10 of what I read here. Hu~
Anyway, head over to Ru's blog and read more about Jizo there.