Books bound in human skin and H. P. Lovecraft's letters are among a few of the treasures this library has to offer.

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

Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.

Vacant Beaux-Arts buildings that serve as reminders of a beach town’s glory days.

The former estate of the Guggenheims, part of the opulent Gold Coast that inspired the Great Gatsby.

A layered tribute to the work of mosaicist Isaiah Zagar.

The first American department store, and home to the largest operating musical instrument in the world.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

An iconic steel and chrome diner from the 1940s left empty for nearly 20 years is in danger of being demolished.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

An abandoned gun-funded 19th century utopia.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

An all-American grocery store in Paris sells U.S. "cuisine" like Pop-Tarts and Heinz ketchup to homesick ex-pats.

This massive library holds what was once the largest book collection in the world.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

There must be a pun in this haystack somewhere...

Commemorating the spot where the famous scientist fed his pigeons.

Lie in a hammock where George Washington stood.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Named the fifth most beautiful building in America in 1885, this former courthouse boasts the best view in the Village.