My daughter convined me to get my little hand held GPS out and check out this website www.Geocaching.com now I am hooked! If you have never done it, check it out. It gets you outdoors and is great family fun! I have learned so much history of this area just searching for these hidden caches. It can be great excerise also. This is high tech treasure hunting! My grandkids now know how to read coordinates on the GPS, maps, follow directions and figure out clues and read a compass, what a great learning experience.