Summary

Google Maps APIで日本語の住所と地名をサポート．

Demo

Google マップ
http://zorgmon.googlepages.com/geocoder-jp.html

Reference

Google Maps API Official Blog: Japanese Address and Placename Support Added to the Geocoding API
http://googlemapsapi.blogspot.com/2006/12/japanese-address-and-placename-support.html