All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

Enormous lake at the bottom of a unique cave system.

Legend says if you stick your thumb in the hole and it gets wet, your wish will be granted.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

The celebrated eyesore created by starry-eyed sweethearts.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

This demon atop the Notre-Dame de Paris looks utterly bored.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

A six-ton wedding present for the King of the Scots.

Protecting the dead from opportunistic body snatchers.

The most loyal of little dogs, or a Victorian era publicity stunt?

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

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

This painting of a beloved dog will be on display at the Scottish National Gallery at long as the museum exists.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

An unphotographable nightly march of tens of thousands of "fairy penguins" from sea to shore.

This Australian beach became famous when Prime Minister Harold Holt disappeared from its shores.

This classic photo booth was saved from destruction by the local community.

Designed to celebrate more than a century of circus performances in Australia.

Featuring Torres Strait Islander cuisine and Australia's first indigenous bar.

It's gunky, it's gross, and it's been freed from the sewer and put on display.

Megapodes incubate their eggs using the heat of an active volcano on this Pacific isle.