4th Street Elevator, Dubuque
For the most spectacular view of Dubuque (not to mention neighboring Wisconsin and Illinois, as well as the Mississippi River) go up the Fenelon Street Elevator off of Bluff Street and Fourth Street in downtown Dubuque. The elevator travels up a very steep hill, via cable, to Fenelon Street, where there a wonderful panoramic view awaits. If the day is nice and you're up for walking, you can walk back down, or you can take the cable car down to where you started. There are some lovely homes up in the Fenelon neighborhood, so if you're into architecture, it's a nice stroll. Before or after, you can visit the shops and galleries in Cable Car Square. For art, I recommend especially the Red House Gallery (open on weekends only) and Outside the Lines Gallery, both just a few steps from the start of the cable car.
One of the coolest things to do in town, the 4th Street Elevator has been there since the late 1800s and you can still take a ride on it today!! The view from the top is incredible. It's a very unique thing you will not find in many other cities. You don't want to miss this!
Near Downtown Dubuque there is a street full of little shops and in the middle going up the hill is the "Cable Car." It consists of two cars that go up and down the hill in the summertime on rails. When you get to the top, you can see almost everything, including parts of Wisconsin and Illinois. The view is great. They also give a little brochure at the top about the history. I think the cost is about $1.50 roundtrip (up and back down).