Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

Renaissance villa and gardens complete with a tormented colossus.

This Buddhist temple is home to the graves of the Japanese national legends, the 47 Ronin.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

A botanically themed auditorium blooms within the world’s last operating double-decker theater.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

This Parisian café sticks almost exclusively to an ethos of reuse.

Walk through Czech history in Prague's largest graveyard.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

When ecosystems collide in the arid Southwest.

Monasteries on rock pillars, once accessible only by frayed ropes.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.