There is this great little site I stumbled across that I thought most people would appreciate. http://www.cr.nps.gov/nr/
Be sure to check it our, you may even learn something new about your area. I've been doing a lot of posts recently about the history of different cities or towns in my area, but only ran into this site today. I think we may even turn this into some history lessons for the kids, we love taking road trips to visit historic sites. I've also just recently been introduced to geocacheing, these would be excellent places to leave items as well. Enjoy!