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

This 16th-century mosque is the hallmark of the African architectural legacy in India.

An architectural relic that survived the hands of time.

Also known as the Great Mosque of Damascus, this is one of the world's largest and oldest mosques.

A spectacular rainbow of stained glass makes the "Pink Mosque" one of the most beautiful in Iran.

Sample specialties from Xinjiang at this Shinjuku neighborhood gem.

Tatar Russian in origin, the largest mosque in Japan is now an Ottoman-style Turkish culture center.

This 15th-century mosque is a beautiful blend of Hindu and Islamic architecture.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

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

A little slice of Japan and its aesthetics in London's Holland Park.

An abandoned company town and cement factory outside of Bogotá, now haunted by ghosts and scofflaws.

Charles Babbage's proto-computer, painstakingly brought to life.

The abandoned "Red Star Train Graveyard" is the final rusting place for precious artifacts of train history.

Some of the greatest minds in the history of Hungarian art and science converged in this café.

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

This sculpture encompasses the emotion of rail travel.

The "shampooer of kings" who opened London's first curry cafe was a celebrity in the 19th century, but is all but forgotten now.

This 19th-century pub features stained-glass windows celebrating Victorian-era "champions."

This pub was 238 years old when it decided to revamp its image: It started serving Thai food.

This beautiful Victorian ironwork masterpiece was built to keep London from smelling like poop.

The pioneer of psychoanalysis spent the final year of his life here, still seeing patients on that famous couch.

Following the trail of an old metro line, this scenic path is haunted by a creepy spriggan statue.

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.