Forget about golf, hotels are getting savvy when it comes to keeping their guests engaged in green activities that not only help clean up the environment, but give them a gift in return. Yes, there are two things that the average human being loves: the "hunt," and presents. Mix the two with the great outdoors and exercise and you've got GeoCaching--a form of high-tech treasure hunting that's inviting a childlike exuberance to emerge from even the most stale adults.

The outdoor game has players using GPS tracking systems to coordinate hidden treasure caches hidden in little boxes in obscure spots all over the world. From rarely explored waterfalls to city street corners, the world-wide scavenger hunt is getting people of all ages and abilities outside and into this greener exercise activity. Each cache consists of a visitor's log so that gamers can mark their territory and even leave a note for the next cache guest. Many caches also have little gifts with a take-one, leave-one concept that can be anything from dice to paper airplanes, jewelry and even tickets to sporting events.

No geocaches in your immediate area? Create, hide and register one yourself http://www.wikihow.com/Create-and-Hide-a-Geocache! It's a great way to change up your work out and even get kids to exercise without knowing it! With over 933,945 active geocaches around the world, you are almost certain to have a green adventure in your area. Or take a trip to one of these resorts to learn how the game works first.