On the Oregon coast there is a natural hole that seems to be draining the sea.

A tomb with a window to ensure the interred wasn't buried alive.

A medieval military street hidden beneath a charming French fishing village.

What looks like missing grout is actually an old pub's peephole.

This home on a quiet suburban street is completely covered with vibrant mosaics.

Did Inca children also slide down these smooth rocky slopes above Cusco?

Artwork tucked within the trees greets visitors with surreal sonic experiences.

The island residents are known for taking their quirky sense of humor with them to the grave.

Hordes of precariously balanced stone figures crowd the shores of the Hudson River.

At 705 feet high, Brazil's "House of Stone" is the largest cave mouth in the world.

This unimaginably large pile of sand near Nazca is one of the tallest dunes in the world.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

This medieval church tower has maintained its clockworks since the 16th century.

The pioneer of psychoanalysis spent the final year of his life here, still seeing patients on that famous couch.

A famous burial ground with a history both grim and literary.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

Dictionary Johnson’s favorite feline.

Claiming to be the oldest hat store in the world, this historic haberdashery had a hand (and a head) in the creation of the Bowler.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

Crouch down, stretch tall, and be sure to flail your legs to pay homage to the Monty Python classic.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

This Scottish museum is the only one in the world to focus not on one religion but all of them.