Museums
Denver Museum of Nature and Science https://www.dmns.org/
Gates Planetarium https://www.dmns.org/visit/planetarium/
Infinity Theater https://www.dmns.org/visit/infinity-theater/
This is a large and interesting museum in City Park, with rotating exhibits, a planetarium and an iMax theater.
Denver Art Museum https://www.denverartmuseum.org/
Here is what's on from Aug 10 - 13, 2023: What's on, on the Wedding Weekend
American Museum of Western Art https://anschutzcollection.org/
Black American West Museum https://www.bawmhc.org/
Meow Wolf Convergence Station https://meowwolf.com/visit/denver
This is best characterized as modern art, but also total sensory overload.
Children's Museum of Denver https://www.mychildsmuseum.org/
International Church of Cannabis https://en.wikipedia.org/wiki/International_Church_of_Cannabis
Not so much a museum as a church dedicated to weed.
Molly Brown House https://mollybrown.org/
Forney Museum of Transportation https://www.forneymuseum.org/
Tours
Coors Brewery Tour https://www.coorsbrewerytour.com/tour-information
They have samples!
Denver Mint https://www.usmint.gov/about/mint-tours-facilities/denver/visiting-the-denver-mint
Unfortunately, they don't give out samples.