It’s called Geocaching. And as you might have guessed it is a website, you can find it under http://www.geocaching.com/. My friends and I play it sometimes. The idea is sort of like treasure hunting. For me the added bonus is that I get to spend time with my friends doing something fun. On top of that I have gotten to see a lot of places that I otherwise wouldn’t have seen. The gist is that people create and hide varying size “caches” and then upload the GPS coordinates to a website. Others than download the coordinates onto a handheld GPS like you phone you don’t need much. Just some time to go out and find it. Sometimes there’s just a log you sign, other times people will leave stuff to take. You can also log your finds on the same website. To date my favorite find was a Backstreet Boys album and a picture of MacGuyver.