Tubing through a cave lit with glowworms is a magical underground experience.

Once a black market electronics marketplace, now an otaku shopper's paradise.

Not quite the menace it once was, this monster still has some chops.

After a profound show of devotion for his master, a dog becomes the symbol of loyalty for an entire nation.

Every color in the rainbow awaits.

Cabaret where the show girls are all androids, and the patrons couldn't be more pleased.

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

A psychedelic labyrinth on the San Francisco bay.

A crumbling hospital from the 1850s on Roosevelt Island.

A giant "X" symbolizes the blood spilled from the brutal Juárez drug wars.

Hear the quietest sound from across the dome.

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

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

One part local history, 99 parts gruesome haunted house.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

These massive mitts are made of 30 tons of devotional bronze.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

The unbelievably opulent home built for an infamous newspaperman.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Quite simply the largest tree in the world (by volume).

The fairy tale castle of the "fairy-tale king."