The Payphone Project is one of those endearing labour-of-love sites which appears completely pointless at first glance, but grows in charm the further you delve. Not only does it feature a variety of links to payphone-related news stories (Hong Kong: Pay-phone explosion sparks safety checks), but it features the numbers of high-profile public phones from around the globe. Want to call The Vatican? It’s 390 (66982) 188.8.131.52. The Eiffel Tower? Try +33 (0)1 47 53 75 68.