Here's a few I've done over the years. The color ones are drawn in Illustrator, the black & whites are pen and ink.
Seattle Space Needle... I love the way this building 'floats' in the sky.
America Airlines Arena and the W Hotel in Dallas.
I like the way the bridge turned out... the rest not so much.
The Chrysler Building, home of the penultimate condo.
I traced a over a photo in Illustrator for the Eiffel.
Dallas City Hall
A sketch of an imaginary town of Fairfax. This is the Hill District.
London. Parliament was traced over in Illustrator.
Not really urban, but this is my home made Parcheesi board. =)
The Big Blue Bear outside the Denver Convention Center.
A drawing of a high school in Fairfax.
Chicago. I accidentally drew one girl playing grab-ass with the other.
A map of my imaginary town of Fairfax.
The D&F Tower in Denver.