Waymarking is an activity where people locate and log interesting locations around the world, usually with a GPS receiver and a digital camera

Digital camera

A digital camera is a camera that takes video or still photographs, or both, digitally by recording images via an electronic image sensor. It is the main device used in the field of digital photography...

. Waymarking differs from geocaching

Geocaching

Geocaching is an outdoor sporting activity in which the participants use a Global Positioning System receiver or mobile device and other navigational techniques to hide and seek containers, called "geocaches" or "caches", anywhere in the world....

 in that there is no physical container to locate at the given coordinates. Waymarking identifies points of interest for GPS users. There are many categories of waymarks, from pay phones through various restaurant chains, covered bridges, churches, places where one can take a factory tour and places of geologic significance, to name only a few.