The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

This grand mansion has starred in everything from Bones to Buffy.

When ecosystems collide in the arid Southwest.

A massive underwater sinkhole made famous by Jacques Cousteau.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

This glamorous old building is said to have inspired the Tower of Terror.

The highest bridge in America was built for an almost unnervingly small amount of money.

This lake in the Cascades lives up to its name, disappearing down a hole every spring.

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

A swing to dangle you off the very edge.

A 70-foot-deep ice cave formed by lava from Mt. Fuji on the edge of Japan's "Suicide Forest." 

A fantastic castle rumored to be the birthplace of King Arthur.

A 19th century artistocrat's mansion, turned into a library, hidden in a modern library.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

A spiritual retreat in the heart of Los Angeles offers stunning gardens and a labyrinth to lose yourself in.

An abandoned relic of the city's failed experiment with below ground transit.

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

European castle ruins in an American state park are actually the product of death and grief.

Historic funicular railway, believed to be the shortest railroad in the world.

A meditative space out of a fantasy story.

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