The labyrinthine storm tunnels beneath the city of Melbourne are ruled by a band of urban explorers.

The word 'wunderkammer' translates as 'wonder-chamber'. This Wunderkammer is both a museum and a retail store.

The largest collection of medicinal plants in Australia is also home to a witch who will show you how to use them.

A massive stairway that almost wasn't leads to one of Australia's most scenic vistas.

Dilapidated ruins that once treated a notorious young serial killer, currently hosting vandals, squatters, and ghost hunters.

The only pollutant in the clear blue water is sunscreen.

The tallest sea cliffs on the Southern Hemisphere are a climber's worst nightmare.

This gracefully curving formation looks like a massive wave that was suddenly turned to stone.

A castle hand-built by a Spanish dreamer in the Australian tropical jungle.

An abandoned railroad tunnel is now filled with bioluminescent bugs.

Occult books, tarot, oddities.

Stalactites and stalagmites in a beautifully lit cave.

The middle finger of modernity.

Thousands of well-dressed mummies below a monastery.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

For more than 40 years this Barnum-inspired half-fox, half-woman has been telling fortunes from her cage in a Pakistani zoo.

These stairs were built to accommodate royals mounted on elephants.

Reputedly haunted sandstone necropolis with exquisite stone carvings.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

The ruins of an abbey believed to have been founded by Charlemagne in the 9th century.

St. Francesca Romana, patron saint of drivers, resides in the church she founded.

The Pope’s secret escape route.

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

The underground sanctuary of a mysterious ancient cult.