Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. WAymarking is an activity in which people can locate and log unique and interesting locations around the world, usually with a GPS receiver and a digital camera. WAymarking differs from geocaching 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. AS of 7 September 2009, there are 928 different categories.