I love these, in Cambridge! An artist has placed a trail of these doors throughout the city. It's such fun finding them as they are about 6 inches high, and are placed on pavement level, so not always easy to spot. We found 5 yesterday, including a 'crime scene' on Mill Road Bridge, where someone had vandalised one of the doors. :-(
Sorry I'm not commenting much at the moment, but I'll get back to it tomorrow ... I'm focusing on keeping up with posts until I get back home.
@shutterbug49 They don't actually lead anywhere, but they are miniature sculptures placed just out of plain sight, in certain areas of town. There's a website which tells you where to look for them - but you do have to pay for that pleasure. We just checked out the ones my SiL knew about. For your information : www.dinkydoors.co.uk They aim to deliver 'dollops of delight that can defend against the daily onslaught of miserable miserableness'!