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International Spy Museum, Washington, D.C. - Full of surprise and intrigue, this museum takes the lid off the shadowy world of international espionage. (Photo: CC by 2.0)

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Titan Missile Museum, Sahuarita, AZ - This uplifting and engaging museum is set within a preserved Titan missile site. The Cold War atmosphere is tangible. (Photo: CC by 2.0)

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National Museum of Funeral History, Houston, TX - Definitely a museum to visit before you die. Hearses have never looked so cool! (Photo: CC by 2.0)

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The Hobo Museum, Britt, IA - There's nothing down and out about this eclectic and unpretentious exhibition chronicling the history of the American hobo. (Photo: CC by 2.0)

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Spam Museum, Austin, MN - How did a brand of canned precooked meat products get its own museum? Chew on the question while absorbing the exhibition. (Photo: CC by 2.0)

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Museum of Bad Art, Dedham, MA - Yes, this museum actually exists and has achieved cult status for its consistently bad art. Even a return visit fails to improve the quality of the exhibits, but the laughs do get louder! (Photo: CC by 2.0)

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International Banana Museum, Mecca, CA - This museum lets you peel back the facts behind the world's largest collection devoted to any one fruit. (Photo: CC by 2.0)

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National Atomic Testing Museum, Las Vegas, NV - This explosive exhibition documents the history of nuclear testing at the Nevada Test Site. (Photo: CC by 2.0)

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Oasis Bordello Museum, Wallace, ID - Set within a former operating brothel, this museum offers a rare glimpse into the goings-on behind the world's oldest profession. (Photo: CC by 2.0)

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Behringer-Crawford Museum, Covington, KY - Beloved by rail enthusiasts for its over 250 ft of model train tracks, vintage Lionel and Plasticville trains, and Thomas the Tank Engine locomotives. (Photo: CC by 2.0)

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Museum of Death, Los Angeles, CL - Built to make people feel happy to be alive, the museum displays a wide variety of art and artifacts surrounding the subject of death. (Photo: CC by 2.0)

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Mathers Museum of World Cultures, Bloomington, IN - Indiana University's museum of ethnography, ethnology, and cultural history is as educative as it is entertaining. (Photo: CC by 2.0)

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SFO Museum, San Francisco, CA - The first cultural institution of its kind located in an international airport, SFO reminds visitors that once upon a time, flying was fun.  (Photo: CC by 2.0)

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Museum of the Weird, Austin, TX - Ponder shrunken heads, mummified beasts, and freaks of nature, in addition to a bunch of horror movie memorabilia at this weird venue. (Photo: CC by 2.0)

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Mütter Museum, Philadelphia, PA - Browse a freaky collection of medical oddities, anatomical and pathological specimens, wax models, and antique medical equipment. (Photo: CC by 2.0)

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Warther Museum, Dover, OH - Ernest Warther's stunning collection of ebony, ivory, and hand-carved walnut steam locomotives are mini masterpieces.  (Photo: CC by 2.0)

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Idaho Potato Museum, Blackfoot, ID - Yes, even the humble potato has a museum all to itself. Look out for the world's largest potato crisp. (Photo: CC by 2.0)

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The Neon Museum, Las Vegas, NV - Where do features signs from old casinos and other businesses end up? Fortunately, right here at this neon revival hangout.  (Photo: CC by 2.0)

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Dr Pepper Museum, Waco, TX - The museum offers an effervescent homage to the celebrated fizzy drink. (Photo: CC by 2.0)

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Twine Ball Museum, Darwin, MN - This quirky museum honors the biggest ball of twine made by one man, among other exhibits. (Photo: CC by 2.0)

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Circus World Museum, Baraboo, WI - A wonderful exhibition devoted to circus-related history. The museum hosts daily live circus performances throughout the summer. (Photo: CC by 2.0)

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Texas Prison Museum, Huntsville, TX - A hard-hitting and uncompromising look into the Texas prison system. Exhibits include historic memorabilia and handicrafts made by prisoners.  (Photo: CC by 2.0)

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Burlingame Museum of PEZ Memorabilia, Burlingame, CA - Every PEZ dispenser ever sold is displayed here, including super rare examples from the 1950s and '60s. (Photo: CC by 2.0)

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Devil's Rope Barbed Wire Museum, McLean, TX - Unusually, this fascinating facility focuses entirely on barbed wire and its history. (Photo: CC by 2.0)

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National Museum of Health and Medicine, Silver Spring, MD - This not-for-the-fainthearted exhibition allows you to see the hands of former professional baseball player, Douglas Allison (1846–1916), showing results of baseball playing. (Photo: CC by 2.0)

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International Cryptozoology Museum, Portland, ME - Exhibits about Bigfoot and other cryptids, plus displays about the finds of "living fossils" feature prominently at this unique museum.  (Photo: CC by 2.0)

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New Orleans Pharmacy Museum, New Orleans, LA - Anything from bloodletting, surgical instruments, to hand-blown apothecary bottles filled with crude drugs can be admired here.   (Photo: CC by 2.0)

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Kazoo Museum, Beaufort, SC - The flute that isn't a flute, there are hundreds of these odd instruments displayed in this, er, noteworthy museum.  (Photo: CC by 2.0)

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Sex Museum, New York City, NY - A museum dedicated to the history, evolution, and cultural significance of human sexuality, some of the exhibits feature explicit content. (Photo: CC by 2.0)

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National Mustard Museum, Middleton, WI - A small museum and emporium dedicated to one of the world's most popular condiments. (Photo: CC by 2.0)

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