I don't normally buy too many foreign souvenirs when traveling, but this one...
I couldn't resist.
Finde die verborgenen schätze.
It means "find the hidden treasures" in German.
When I visit a new place, I usually have 3-4 things that I want to do, eat, or see. Everything I do beyond that is a bonus. I like to walk around meeting people, seeing things, and finding those hidden treasures of that place that might not be listed on a tourist map.