I've been geocaching for quite a few years now and find that it's a wonderful way to experience new people, places and things while exercising. If you are unfamiliar with it, you can visit their site at www.geocaching.com
I've had great experiences while doing this somewhat unconventional sport and the great thing is...it's all over the world. I encourage you to check it out. I still do it but sometimes our weather is not real cooperative at this time of year. In my state, MN, the state parks even have them. Not only is it a great exercise activity, but a great hobby. I've met great people and seen places I otherwise wouldn't have known existed!