This is a MUST for residents and tourists. A red cable car ascend the incline of Pittsburgh's Mount Washington. It is the perfect way to get a skyline, panoramic view of Pittsburgh at day or night. I recommend going at night because the night view of Pittsburgh is priceless.
One way trip cost $2.50, round trip cost $5, so the trip is definitely worth it. There is a mini museum once you get to the top of the incline.
The downside is the you do need exact change; no credit cards are accepted.