Web address: http://www.waymarking.com/
Geocaching is a great way to get out and find stuff. But if hunting under bricks, logs and rocks at the back of the park isn't your thing, you may want to try out WayMarking.com. This site was also developed by GroundSpeak, the same folks that brought us Geocaching.com. The main difference here is that waymarks unlike geocaches have no physical item you have to locate. It is based on the idea that information is tied to location. When you locate a waymark, all you have to do is go back to the website and log your visit. You are encouraged to upload a photo of yourself at the location, but it usually isn't required.
Tools like Google Earth, and Google Maps will also let you track places you have visited but after yesterday's blog post, I thought this was worth a mention.