A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

The first American axe throwing club.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

"Mock all and sundry things, but leave the saints alone."

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

One of the now-less-hidden floral gems of the "Emerald Necklace."

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

The legendary building that needed ghostly approval before being built.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.

Bright Indonesian villages painted in a rainbow of competing color schemes.

A breathtaking flower tunnel bursts with beautiful golden blossoms.

A magical expanse of colorful street murals lies hidden within the quiet neighborhood.

A collection of intricate sculptures so small they have to be seen through a microscope.

A medieval bridge stretches over a sulfur-rich river that leads to year-round natural hot springs.

This hulking behemoth is actually five interconnected towers built in the 1960s.

Woven tree art gives this towering Australian woodland a touch of mystical whimsy.

An overlooked collection of over 350,000 artistic works created by psychiatric patients using art therapy.