On this wooded path, a stained-glass window creates a spellbinding forest cathedral.

A subterranean playground in an abandoned slate mine.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

The longest and tallest aqueduct in Britain can actually be sailed across.

When King Oswald was killed in battle, an eagle dropped his arm here creating a new spring.

The sculpture is made of more than 100,000 knives collected to raise awareness about violence.

A kaleidoscopic warehouse-maze of handmade neon signs.

These layered sandstone mountains in China look like they are made of pressed crayons.

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

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

This extraordinary geological oddity resembles human-made pavement.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

James Turrell's total color immersion art installation, hidden on the top floor of a luxury handbag shop.

A remote candy-striped mountain in the Peruvian Andes straight out of the pages of Dr. Seuss.

This small museum in a 17th-century building honors three iconic Scottish writers.

This early version of the guillotine was used to execute the man responsible for its construction.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

At high tide this strange footbridge appears to have no purpose whatsoever.

The largest tiger reserve in India is a vast expanse dotted with ancient ruins of Nagarjuna Viswa Vidyalayam.

A blooming house of worship for the masses.

Once an indicator of social class, the color blue has come to define this city on the edge of the Thar Desert.

This otherworldly palace-mausoleum complex is the stuff eternal dreams are made of.

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