Unless they've changed it, BatMUD uses a map system that draws a map of the terrain around you as you are wandering outdoors. It also has descriptions and feels more like a text MUD with a map, rather than a map you're moving around in text.
It's an interesting hybrid, in that while the text remains there as a focus, and every "room" has a proper text description, it really removes the "feel" of it being broken up by rooms. Wandering the city feels more like playing a roguelike if you pay attention to the map at all.
Note that this is in sharp contrast to several DikuMUD games where an "overland" map means the whole screen is one big map and there are no text descriptions.
Here's a couple screenshots.
I laughed when my poor guest character died from being too exhausted. Take that you wussy MUDs out there! You know who you are.
I remember they have a full day/night system with lighting too, so as it gets dark, the colors start to fade from the map and it ends up being mostly dark greys except around light sources (such as the city lamps). I watched a lamplighter actually go around and light the lamps, which then made a radius around them look normal.