If you're anywhere near the Riverwalk in Dubuque, I encourage taking a stroll all the way down the river and back. You get to see awesome things (that you might not otherwise see) like the Dubuque Shot Tower, Stone Cliff Winery (old Star Brewery building), etc.
Dubuque is home to the last remaining shot tower in the U.S. west of the Mississippi. The tower was built in 1856 to provide lead shot for the military. The shot tower struggled almost immediately due to economic downturn from the Panic of 1857. When the Civil War broke, the Union Army purchased shot from towers in St. Louis, Missouri. A St. Louis company, Chadbourne & Co., purchased the Dubuque tower, but did not use it. After the war, the Standard Lumber Company used it as a fire watchtower.
The tower was abandoned after a series of fires in 1911 destroyed the local lumber industry and damaged the tower's wooden interior. In 1976, the tower was listed in the National Register of Historic Places. Repairs soon followed, and in 2004, the Shot Tower became part of ongoing riverfront renovations.
4/5 because you can't see the inside. Still educational and worth seeing in person. read more