Bridge over a bridge rendering incorrectly

Have I done something wrong or does Mapnik not respect layers when rendering bridges over bridges? See the south east corner of the Harrow Rounda...

Mapping rural areas

There seems to be a general problem with mapping rural areas on Open Street Map, in the UK. It ranges from whole towns that almost aren't mapped to...

Royal Holloway University Campus

I've been mapping the Royal Holloway - University of London campus and I've had a couple of problems. The main building is '8' shaped - a rectangu...

Windsor Great Park

I've been busy mapping out the wooded areas of Windsor Great Park and correcting the paths and roads in the park, Englefield Green and Egham. Havin...