Check this out!
BBC Dimensions, located at HowBigReally.com, is a neat tool for quickly comparing the size of famous objects and events to the size of your town, county, state, or country. BBC Dimensions runs on Google Maps. Here's how it works; pick one of the categories of objects or events then select an object and a small map will appear. Then enter your postal code or city name and BBC Dimensions will overlay your selected object over your city.
Worldmapper: The World as You've Never Seen It Before
Map of Waynesfield, Ohio