The solution is available after completing the Florence History
What is the Adventure Lab® app?
Geocaching Adventure Lab® is a new app from Geocaching HQ that allows you to create, play, and share unique outdoor scavenger hunts, experiences, and games. The Adventure Lab® app guides players through the process of finding clues, solving puzzles, and completing Adventures one Location at a time. Simply sign in with your Geocaching username to answer clues at each Location and add to your find count.
You can download the Adventure Lab® app here!
This business has been located here since 1985 but the building is much older