On the subject of tourist attractions...
As most of us know, George Ferris lived in Pittsburgh and won the bid to build an iconic entertainment device at the Chicago World Expo in 1893. With Ferris wheels becoming the 'in' thing to build as an iconic tourist attraction, Pittsburgh seems like an obvious location for one given the wheel's history.
My thoughts regarding the subject would be to not build one of the minimalistic and sleek new wheels like the London Eye or recently opened Las Vegas High Roller. Rather, build a wheel that emphasizes its steel structure like the original Ferris Wheel.
It seems that the city has enjoyed adorning the skyline with lights, whether in the form of signage (good and bad), or lighting packages like the Gulf Bldg. LED lighting packages have some very cool possibilities, but it would need to find the fine line of standing out without looking gaudy. But imagine the wheel lit up as a GIANT Steelers logo for Sunday/Monday night football on national TV.
Location is another issue. I'm not really sure where a large wheel could go. I just wanted to toss this idea I've had out there to you guys to see what you thought.
Ferris' original wheel with its hefty steel structure.
Newly completed Las Vegas High Roller