The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

Moscow's imposing monument to the Space Age.

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

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

The sixth of London's "Magnificent Seven" cemeteries, and a source of unlikely inspiration to Beatrix Potter.

Fantastic collection celebrating the final send-off.

A little bit Wonkatania, a little bit pink elephant.

A 90-year-old underground water reservoir offers a more industrial kind of tranquility.

A snapshot of the city's fascinating voodoo culture.

A small park on Bourbon Street features life-size bronze statues of New Orleans musicians.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

Once an opulent Art Nouveau hotspot, the Constanța Casino is one of Romania's most beautiful abandoned buildings.

Conspiracy theories and occult legends surround this mysterious natural rock formation.

This monumental Jesus is often referred to as "Our Milk Carton With Arms."

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

This unacceptably tall building was the real reason for Washington, D.C.'s skyscraper ban.

Memorial to the father of the Republic of China.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

A sweet symbol marks the place where torturous executions were once carried out.

Breathtaking and huge 430 year old maps of Italy.

A health museum containing a 27’’½-foot intestine.

Controversially claiming the title of world's biggest bass drum, UT's Big Bertha was once made radioactive by the Manhattan Project.