I've made a nice discovery today ... a snark kind of discovery! You travel in london you should love that one.
And thanks to hanukkah I'm going there in a few weeks (February?). It's called animalsontheunderground
Thanks Serial mapper (a brilliant blog that has nothing to do inside my RSS feed ... but i love it ... this guy is bringing new idea for puzzling -I discovered him just after) Oh it's in french.
PS: and for some more fun on Venture take alook at Flyintiger post. It's priceless !