With Americans anxious to go out, walking tours pick up pace

In this Sept. 20, 2020, photo, tour guide John Erardi, right, talks with a tour group on the sidewalk outside the Cincinnati Reds Great American Ball Park in Cincinnati. The walking tour was one of the few groups of people on the street as the Reds and White Sox were inside just an hour before the game without fans because of the pandemic. (AP Photo/Dan Sewell)

CINCINNATI — With an eerily quiet and empty stadium plaza behind him, the tour guide tried to help people picture what they would have seen there more than 160 years earlier.