I've been working on a fan site to help navigate the world or Ur since I was a wet-behind-the-ears Glitch. The site has grown in information and functionality over the months since. While it will probably never be complete, it has a lot of functionality. (Data is continuously updated via the API so street info should be nearly real-time.)
Check out glitch-atlas.info and let me know what you think. For a quick video tour, see the Help page.