This is the most blissful experience in Pittsburgh. It's so simple, but surprisingly fun. I added this to my itinerary because I had a coupon, and because it was on the same side of the rivers as my hotel, but it ended up being THE highlight of my trip.
I started the ride on top and went down first. I had a few minutes to kill so I checked out their behind the scenes "tour" -- you put a few quarters in a turnstile and get to see all the cranks and things that make the rail run. I love that sort of stuff, so it was totally worth it.
It was pretty uneventful the day I went, so I had the ride to myself one way, and shared the car with one other person on the return trip. The experience was wonderful -- there's really nothing like these silly old incline rails.
This was the first funicular railway I've ever been on, but it's made me kind of obsessed. I still don't know how to properly pronounce "Duquesne," but I talk about it a lot anyways!