Link to map:
http://www.bungie.net/forums/posts.aspx?h3fileid=34565269

This is a very small but detailed map, its setting is new york and it is made from a Grand theft auto 4 surrounding, kind of...

Its a big building in the middle(3 floors) with two smaller buildings on its side (no entry, climb ontop) across the street is a big apartment bulding (apartments not enterable) but there is a sewage system (YUM!!!) the fun is all in the main building. It has a main entrance that closes after 20 seconds of gameplay. there are alternative ways in. The building has a basement (mostly shield doors and weapons, tables) the next floor up is an entrance, a couch and a kitchen table with a view of the beautiful back alley. top floor has 2 bedrooms, one leads up to the ceiling, other has a turret out the window. After a few seconds, all the windows are blocked by pallets (like nailing wood to the windows to prevent invaders)
The two other buildings have ways up on to the top and on the top of the main bulding (fire escapes, man cannons)
For the other gametypes, like GTA4 its like the mission on planting a bomb under the old man's pillow (look at the pic)

OK HERES THE PICS:
view of main building:
http://imageshack.us
apartment view:
http://imageshack.us

front door(open):
http://imageshack.us
into sewers (invisible toilet):
http://imageshack.us
sewers (clean!? who flushes guns down toilets?)
http://imageshack.us