This centuries-old Italian chapel hangs midway down a sheer cliffside.

This massive mushroom has spent centuries eating its way across a huge swath of Oregon.

The only pollutant in the clear blue water is sunscreen.

This massive blockhead sculpture hides an entire library.

This ancient octopus-like tree was saved from destruction thanks to shady reporting.

An eccentric folk art landmark made out of discarded bottles by an inspired "grandma."

A German apartment building hosting as many trees as human occupants.

Massive crater in central Oregon.

High atop a Mexican rainforest mountain, this ancient pyramid once drew pilgrims countries away.

The largest island on the great salt lake is home to curious creatures and strange stories.

Smooth basaltic rocks tell a tale of ancient glacial waterfalls.

This freshwater spring fills with 10,000 gallons of water per minute.

Nuclear waste dump site now an environmental sanctuary.

A palatial sculpture park was built illegally and in secret by a self-taught artist over 36 years.

A dangling church built over a Colombian gorge.

A secret, rocky playground hidden amongst the plain white beaches of the Florida coast.

Arcadia is home to a haven for nature geeks and 80s TV lovers alike.

This complex of vertically-excavated Buddhist, Jain, and Hindu monolithic temples in India's Maharashtra providence illustrates a spirit of tolerance characteristic of ancient India.

A volcanic fissure over two miles long and up to 70 feet deep.

A white Buddhist temple with a golden restroom.

Site of a famous 19th-century transcendentalist utopian community, now abandoned.

A perfect turquoise lake colored with glacier dust.

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

Former meatpacking facility turned vertical farm and sustainable business complex.