Anywhere, that is, if you can communicate your destination to the driver. Not many adult Mongolians speak English, so I've had to solve this problem by asking Javhlan, the translator in whose apartment I'm staying, to write my usual destinations in Cyrillic on a PostIt note, which I then show to the driver, who mutters the incantation until he or she figures out exactly where it is I'm bound. Finding an address in Ulaanbaatar is not that easy, even for Mongolians, because there are no addresses. There are microdistricts, buildings, entrances, floors and apartment numbers, but none are actually written anywhere, so even once we've arrived in the area, the driver has to ask the locals for directions. A typical address might be Microdistrict IV, Building 5A, to the left of the bus stop, 3rd entrance, 2nd Floor, Apartment 78.
Trouble is, there are several bus stops and at least eight entrances.
I carry a small collection of these pieces of paper at all times. If I were to lose them, I'd be stranded. What a fate for a westerner. Let's hope it never happens.