Geocaching: world's greatest treasure hunt
Geocaching consists in searching for treasures that other users have hidden. The application gives you a location and some clues so you can find the treasure also called cache.
The treasure can be a toy, a card, a paper plane or any other object. The idea is the one who finds it replaces it with another item.
This app is very useful for getting to know cities, as many of these hiding places are located in symbolic areas. As a result, one can be a detective and a tourist at the same time. It also serves to discover unknown places in your own neighborhood.
There are already more than three million caches hidden in 190 countries. It is undoubtedly a fun family activity.