It's close to Newhouse DT Super Condensed Bold

http://www.myfonts.com/fonts/dtptypes/newhouse-dt/super-condensed-bold/

But the shapes of the letters are actually more rounded, the a has an extending foot and the t has an angled top.

It's possible this is a custom font for Towergate, but I don't actually know for sure.

A larger image:

Alts: Grotesque MT, Brown, ITC Roswell, Venus

As I looked at Venus I realized it could be the Font Bureau's version: Vonness.