The internet makes it possible to visit your property without incurring travel costs! Google Maps/Google Earth and Google Street View are amazing for letting you see your property and the surrounding neighborhood. If you want a more detailed view of your property then Bing Maps can provide you with both Aerial and Birds Eye views from each compass direction.
Zillow is good for getting property information, like school districts and physical size. It will give you an estimated value, however this can sometimes be a little inflated. It also shows other properties for sale in the neighborhood.
For a more detailed search, Intelius or USSearch will provide you with a full property background check, valuation report and comparables in the area.