It was nice and cool when we arrived a little after 9:30. As the morning wore on it got steamy, and we tried to stay on the shade whenever possible. In the end we figured out 16 of the 20 locations. Most of them were along the Missouri riverfront or in the historic Main Street area.
Before we started we had some logical guesses and mapped out a tentative route, but the hunt still required walking up and down the streets several times. During the walk I saw a lot of people wearing a lanyard that indicated they were part of some organized group. At one point Tony and I stopped and chatted with two men who were sitting on a bench and learned that they were on a mystery tour.
A couple of days earlier they had gotten on a bus in Wisconsin with no clue about the destinations or attractions they would be seeing. They had spent time in St. Louis visiting multiple tourist attractions, and St. Charles was their last one before they started back home.