Ralph Waldo Emerson spent two years living here decades before it became a Frederick Law Olmsted-designed park.

The world's largest squirrel statue clutches a pecan bigger than your head.

This Seattle museum displays the history of the telephone through an impressive collection of telecom equipment.

For just a few bucks, this Iowa funicular will let you feel like an 1800s fat cat.

Near Birmingham, England three and a half miles of top-secret tunnels housed a World War II “shadow factory” and a Cold War nuclear bunker.

A collaboration of art and ornithology mourns the calls of Sydney's lost birds.

The shell of a medieval fortress offers commanding views of the area it once protected.

A dark tunnel leads to a striking white crater that seems to be from another planet.

A preserved Nazi labor camp now has a Holocaust museum on site and memorials to the thousands that died while imprisoned at the camp.

A strange, heartwarming, decades-old declaration of love on a New Hampshire roadside.

FDR hoped to find a cure for polio in this Georgia town's warm springs.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

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

A toxic ghost town sitting atop a massive coal fire.

Northern Ireland's Brobdingnagian stepping stones.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

The world's longest known cave system.

The largest permanent Monopoly board makes one of the longest games even bigger.

A beautiful oddities shop crammed with strange and morbid curiosities.

An abandoned quicksilver mining town surrounded by the Big Bend parks.

Despite time, colonization, and the brutal New Mexican heat, these Pueblo ruins still stand.

This crumbling folly looks like an enchanted left over from Middle Earth.

A local scoured more than 1,000 acres for stone to create his masterpiece.

This ghost town was once a cult-like religious utopian settlement.