Accessible only at low tide, the deserted island is dotted with World War II ruins.

A 18th century graveyard and its astonishing cortege of macabre iconography.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

The fountain marks the area where hundreds of accused witches were burned at the stake.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

This tin chapel was built by POW's during World War II and is painted to look like something much more grand.

Thanks to both terrific preservation and historic vandalism this ancient site is known as the "Heart of Neolithic Orkney."

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

This tiny island featuring 9th-century Viking ruins is only accessible at low tide.

Possibly the oldest of Britain's ancient henges is also one of its most stark.

The world's largest fire hydrant is supposedly tornado-proof.

This giant iron playfully pays tribute to an early 20th-century architectural trend.

With its webbed walls and bright red coloring, Calgary's iconic bridge looks like a finger trap puzzle stretched across the river.

This rare effigy of the author spent years lost in storage.

The modern birthplace of Irish freedom.

This mundane post marks the old location of the city's main postal hub.

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

The oldest residential street in Europe also features an optical illusion.

The world-record holder for the longest bridge stretching continuously over water.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

Decades before the scandal, this staircase on the river was a literal "water gate."

On this stunning Scottish island, you can walk in the footsteps of dinosaurs.