One of the smallest bookstores on the planet.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

Relive a Polish uprising via an enormous, century-old cyclorama.

In the center of Wrocław's old meat market stands a somber tribute to the city's livestock.

This oddly beautiful water cistern is a techno-temple to the wet stuff and a multimedia masterpiece.

A striking public sculpture representing the period of martial law in Communist Poland.

Spectacular views await visitors to this lake.

This angular Dwarven tunnel cuts through a mountainside in Glacier National Park.

The only road through the heart of Glacier National Park.

Site of a famous 19th-century transcendentalist utopian community, now abandoned.

One of the indelible moments of the American Revolution took place at this location.

The last remaining 19th-century tenement from Boston's old West End neighborhood.

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

An enormous, inside-out glass globe built in 1935.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

Its buzzing collection honors vibrator history.

The tea room that pushed the boundaries of adorable straight into...we can't find the words.

Pyramid home to an obscure religious group that practices modern mummification.

A house carved into a rock in the 1940s.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

A historical home in upstate New York honors the work of John W. Jones, a formerly enslaved man who was a major agent for the Underground Railroad.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.