While in Seattle, we went on the underground tour. I had heard that Seattle had a large underground, but I didn’t have many expectations beyond that. It turns out that the city was rebuild after a fire. The city decided to regrade at the same time as the shops were rebuilding their buildings. The result is that the first floor of many buildings is at a lower elevation than the street. This was “fixed” by putting sidewalks at street level, effectively burying the ground floor of the buildings. This created the underground. There are all kinds of funny stories about the underground. The tour is worth every penny (and they only take cash).
Here are some of my favorite pics. You can see all of them here.