Who needs fancy modern water slides when this giant North Carolina rock works just as well?

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

An emerald-green grotto just a short trip from Austin.

This cheerfully-named branch of the Chicago River is the fetid result of years of blood, entrails, and meatpacking waste.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

This obscure walkway links Edinburgh’s Old Town with one of the city's prime vantage points.

The second building of its name to occupy this location might be the finest flatiron building in San Francisco.

Golden Gate Park's historic collection of plants.

Tiki luxury on Nob Hill.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

A psychedelic labyrinth on the San Francisco bay.

An alien church provides much needed silence in the midst of a Finland shopping center.

Climb inside an iron crystal magnified 165 billion times its normal size.

Lavish royal estate punctuated with heated greenhouses.

Edinburgh's oldest statue hides within a parking lot behind the city's iconic cathedral.

Nestled among the living residents is the final resting place of an apothecary plague victim.

The Scottish Reformation leader's grave was paved over and is now a parking lot.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

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

The tomb of one of Scotland's bloody historic villains is a magnet for bumbling desecrators.

Protecting the dead from opportunistic body snatchers.

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

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.