Wiki Field Trip is a neat website for exploring Wikipedia entries about places around the world. Here’s how it works, enter a city name on Wiki Field Trip and a series of placemarks appears on a Google Map of that city. Click on any of the placemarks to read the Wikipedia entry for that location.

Applications for Education
Wiki Field Trip could be useful for students to use to learn about a city or cities. Wiki Field Trip also provides a great model for students to use in the creation of a mapped tour of their own town, state, province, or country.

Here are some related resources that may be of interest to you:
WikiMapia – Wikipedia on a Map
Placeopedia – Wikipedia and Google Maps