One of its engravings is believed to be among the first representations of medical and surgical instruments.

An imposing Omani fortress surrounded by date palm trees.

The only National Monument ever to go missing for nearly 50 years then resurface in a dump.

A hands-on traveling collection of the innovative devices of yesteryear.

Camera cars and condom bikes built from scrap and one man's passion.

An abandoned bus station transformed into a museum dedicated to the history of Greyhound Lines, in the place where it all began.

Once a giant gingerbread factory, this space now hosts exhibits and workshops on the historic treat.

This small town in Germany was once a center of peppermint production, and has the museum to prove it.

The world's largest collection of preserved trolleybuses.

The secular incarnation of a religious meditation.

A collection of more than 12,000 shoes, displayed in a building shaped like a shoebox.

A gigantic collection of teeny, tiny books.

Central Europe's largest collection of mini-bottles is on display at this museum devoted to a bitter Hungarian liquor.

An encyclopedic collection of mammal penises.

Its buzzing collection honors vibrator history.

A Dutch clog company in the town of Zaandam loves the wooden shoes so much it made a museum for them.

This delightful little museum is dedicated to only one thing: pasta.

A master plumber has turned his love of art and toilets into a folk museum that's not taking the piss.

Thousands of lawn gnomes have infested this Australian roundabout.

A comprehensive collection of Pez dispensers.

This tiny river island switches sovereignty every six months as part of a rare, centuries-old agreement.

The history of radiation is on safe display at the foot of a radiation science laboratory.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

Before Nixon, "watergate" meant canals.