Reddit, in four months I will be travelling across the entire United States. What does your city have to offer? What should I make sure to see/do?

I would like to know general information, as well as off the beaten path information.

For example, I am from Minneapolis and would recommend visitors rent a bike and check out our amazing urban bike trails. For off the beaten path, I would recommend checking out the Cedar Riverside neighborhood - which is the largest concentration of Somali people outside of Somalia. Really cool because it almost seems like a different world.

So where should I go? What does your city/area have that I can't miss? Thanks!