This charming, medieval walled village is Spain's first "book town."

This sprawling bookstore spans four floors and has more than a million books in stock.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

This free, take-a-book shop seems like a trick but isn't.

A sprawling maze of used books piled from floor to ceiling.

Designed by Maya Lin, the memorial honors 41 individuals who died fighting for equal rights between 1954 and 1968.

You'll need cowboy boots to trek to this old-fashioned saloon nestled in a giant natural cave.

The first plantation museum in the United States to focus on the lives of enslaved people.

A moving tribute to a leader of the American abolitionist movement.

A Milwaukee museum provides an unsparing and ultimately empowering look at the Black American experience.

A dramatically eroding canyon thousands of miles from the desert.

William Faulkner kept his beloved estate wild and untamed.

An eerie and beautiful group of columns mark the site of a grand mansion lost to time and fire.

This boulder stays on its mountain thanks to a huge chain and on the map due to local legend.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

A faux desert landscape in the middle of the jungle that sprouts oases during the rainy season.

This stunning Brazilian library contains the largest collection of Portuguese texts outside of Portugal itself.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

With some 500,000 books across five buildings, this bookstore is a reader's paradise.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Every last book in this bookstore is signed by the author.

A 19th century library favored by Edgar Allan Poe and H.P. Lovecraft, known by locals as "the Ath."

There aren't too many operational funiculars around, but Pittsburgh has two!