Have you ever heard of geo-caching? Well, neither had we. Let us give you a little background information before we delve into how you can get to know London’s Square Mile better than the most trusted black cab driver.

The idea is simple, but ingenious and fun for the urban adventure seeker with an affection for sleuthing and historical facts. Geo-coaching can be done anywhere and everywhere; all you’ll need is a mobile device with GPS and any of the various geocaching apps available. The GPS, as well as the hints provided, are needed to find the hiding place of an inconspicuous container and within the container often a little trinket that may be a gift for you, or something that is entrusted to you to bring and place inside the next geocache in another city of preferably country (just to spice it up) – with an accompanying explanatory note.

Most often you will find perhaps a film container or small tin box including a tightly rolled up scroll serving as a log book, where you write down your name and the date of your discovery of the cache. People unaware of the existence of caches are endearingly referred to as muggles, as it is important not to act suspiciously or advertise what it is you are looking for in case someone lesser in-the-know comes along and makes away with the treasure. However, you also do not want to act furtively for the reason that it might attract the wrong kind of attention, as from a park ranger. If this were to happen in Hyde Park, where caches are strictly forbidden, it is safest to fess up, come clean and reveal the inner world that is geocaching. To give you more of a sense of what this phenomenon is, let’s visit an arbitrary spot in the City.

Postman’s Park

Our geocache subject line reads “Last Delivery” and the GPS brings you into a tucked away garden that you perhaps might know if you’ve seen the film Closer: Postman’s Park is a muted hideaway oasis in the middle of the City. In the app you are given the choice to read a description of the spot and some of its history and trivia – if you were wondering, the park opened in 1880 and a man named Nick used to work there, and most lovingly there is a wall commemorating the lives of persons who gave their own to save or attempt to save others. If this information is not enough for you to find the cache you can always simply tap on the hint option and it gives you some further help in locating the little bugger. If you are still left clueless and empty-handed, there is a review section for every geocache – some with helpful hints and some downright spoilers.

Geocaching is a wonderful and truly quirky way to explore a new city, or why not even your own neighbourhood. So don your walking shoes, whip out your magnifying glass and put on that trench coat and start snooping.