On my second visit to the Broomfield, Colorado, Depot Museum, I was escorted through the museum's interior and educated by the knowledgeable staff. I also got to see the collections plus preservation and cataloging efforts by dedicated people who spend their valuable time educating Broomfield's citizens.
A visit to a very congenial brewery and taproom, New Belgium Brewery in Ft. Collins, Colorado. You might know its Fat Tire beer. In my experience, New Belgium's digs could qualify as a beer garten in many ways, including the way people are invited to hang out there, take the free tour, and feel comfortable doing so.