Cool site! Trulia Hindsight

Trulia Hindsight is a tool that shows real estate development over time in a given area. Input a zip code or a street name and watch the map depict real estate growth over time with dots on the map. The map populates as the area was populated. In the city where my brother lives, it's interesting to see how houses popped up further east as time went on and then, in the last 50 years or so, there has been virtually no new homes constructed. On the other hand, in the city where my parents live, population growth has boomed in the last few decades and this map shows how the city grew in clumps - all the new construction is within subdivisions. It's very interesting and my words don't do it justice. (via)