[Leech]

I have seen it done before, but not through OLC scripting - it was coded in to the OLC itself and builders could edit it. I think it was actually on The Builder Academy where I saw this. Alternatively you might want to try messing with doorways. Depending on other MUDs you've played you will be familiar with something along the lines of:

"You go west, through the doorway."

You could change 'door' to be whatever fits. "You go west, through the grimy street, and see a dirty man hawking pieces of worn glass jewelry."

I'm not a coder and I hardly know any scripting, but I can answer your question with a resounding yes, there is a way =P And somebody more intelligent than I should be able to tell you a few ways how.