When you go to London you may see the odd Police Box here and there, and one in particular takes up residence outside the Earl's Court Tube stop. Unfortunately in real life the door is locked, but thanks to some Google wizardry you can now get all timey wimey via the wonders of the internet and Google Maps and step inside the TARDIS.
All you have to do is click the double arrows below to have a gander around the interior. Unfortunately there's no access to the pool.