National Museum of Toys and Miniatures
Kansas City, Missouri
Opened in 1982, then reopened August 2015 after an $11 million renovation. One floor is the Hall of Miniatures, including a set of dueling pistols the size of a postage stamp that fire micro-bullets. a pair of dressed fleas, and a panda painted on a grain of rice. The other floor is devoted to toys, from early board games to the Xbox. The museum contains 38 galleries and over 10,000 marbles.
Bridging the gap between the two collections is a dollhouse commissioned by 1880s Kansas City millionaire Josephine Bird Hall -- so big that children could live in it -- with real oil paintings, gas lamps, and working plumbing. A sign explains that it was built to teach girls how to manage a home. It was never meant to be fun.