Washington, DC, is rather nicely planned and laid out. There are four quadrants (NW, NE, SW, SE). All of the north-south streets are numbers. The east-west ones start with the alphabet, and then move to two-syllable names alphabetically, and then three-syllable, and then trees and flowers. Anyone with that knowledge can at least mostly accurately find their way around. Of course, the part that confuses things are the state avenues - each state has its own avenue in DC, and they are often the most convenient way to get from place to place. If you don't know approximately where they are, it can make things a bit difficult.

Of course, you go out into the suburbs, where a lot of my friends live, and things get much more confusing. I get lost in Bethesda easily - there doesn't seem to be any common theme in street names. OneStaple lives in Potomac in a neighborhood of "Eldwick" streets. I personally prefer the way DC is laid out.

Ki"lives between 13th and 14th, near Colorado and Georgia"ki