Dahn tahn 

The cluster of buildings in any metropolitan area; otherwise known as "Downtown"

Generally exclusive to the Pittsburgh area.

yinz goin' Dahn tahn?

Dahn tahn by Munda November 22, 2002

dahntahn 

Pittsburghese for "downtown"

Hey!! Y'uns guys goin' dahntahn to see dem Stillirs?

dahntahn by Italian Stallion October 11, 2004