A modern-day treasure hunt, geocaching is an outdoor recreational activity which uses GPS and other navigational technique to hide and seek “geocaches” amongst its players.


Some of Prague’s geocaches include:
Lennon Wall – Amidst the famous wall of creative expression, find John Lennon-inspired graffiti, lyrics from Beatles songs, slogans of peace and love…and the cache.
Wenceslas Square – Skirt the crowds and the traffic of Wenceslas Square and head to front entrance ramps of the National Museum to find this micro cache. Act with extra care when retrieving and replacing it. 
Emauzy - Inside the Abbey, find the classic but magnetic film canister. Be careful when retrieving and returning the cache. The monastery is frequently visited so best to visit between 6pm-8am daily and during weekends


More info and other caches:
http://www.geocaching.com/bookmarks/view.aspx?guid=7ab52a24-afdf-4150-9276-89c4997df7b8