There are not many Wherigo caches around the world, but if they are made well, they can make you feel like in different world. Doing Traditionals, Multi or Mystery is always in the real world, but adding the virtual reality in your phone makes a big difference (and a lot of fun).
It is very sad, that Groundspeak does not give a **** about Wherigo since they started it and all good what was made since then was made by community of cachers, who really liked this game (OpenWIG and other players, Urwigo and other builders, interesting cartridges, new website) and who are driving the things further. They (We) are currently arranged as a Wherigo Foundation, which is a umbrella above most of these projects and it is worth mentioning also in this QA to increase the awareness. Unfortunately Groundspeak is not helping in any way.