I've been doing world building on a fantasy setting for a while and have a decent mental map and some truly atrocious hand drawn maps to go with my writing. Unfortunately when I'm working on travel times and city layouts that's not really cutting it so I did a little browsing and found this awesome little community who make some really kick ass maps, way more detailed than I was hoping for.

I'm a very visual guy and get a lot of my inspiration from ruminating on ideas so making my own maps would help me out a buttload. Any pointers or guidance for making detailed maps on the city, regional, and global scale would be awesome!