i have a good few of these, but to start:

FUCK THIS PLACE.
it's in South Dakota, and when I went there in roughly 1995 or so, it was as pretty on the outside as you see above. which is very pretty!
the murals on the outside are, shockingly, made of corn. they're really elaborate and detailed and totally great.
so what's inside? a small gallery of pictures of the Corn Palace, then what is essentially a tourist trap flea market full of third-world-produced generic neon animal dolls and other random junky chotskies that have pretty much zero to do with the Corn Palace itself. they didn't even have a logo on them!
even as a kid, i was totally let down by this place after picking up so much literature about it on a road trip i had as a kid from Michigan to Seattle in a Ryder truck with my Dad. thankfully, there was another museum nearby that DIDN'T suck:

the Enchanted World Doll Museum was basically just a ton of staged doll dioramas, but the ornateness and overall quality was through the freaking roof. crazy levels of detail made each individual display, of which they had many, totally unique and beautiful.
apparently it may be closed forever now, which is really sad.