A boiling wellspring flowing with natural gas burns in a continual blaze.

This edible park is open to any and all foragers.

Crop circles inspired this whimsical garden in Germany.

The ruins of this monumental city founded by the first Roman Emperor are strangely overlooked by most travelers.

This hidden Sufi cemetery is a spiritual monument for India's third gender community.

This pond is so stunning it looks like you've stepped into one of Monet's masterpieces.

This spectacular dome managed to survive after being bombed in World War II, in an event known as the "Miracle of Mosta."

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

A derelict bit of transportation infrastructure hidden in the woods.

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

This historic national park is covered in the stunning ruins of red rock pueblos.

Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

Dramatic river bend surrounds a natural red-rocked pedestal.

Most-visited and most-photographed slot canyon in the American Southwest.

Rippling sand dunes frozen in the Arizona rock.

Don't be a grizzly man. Get personal with Alaska's wild bears from the safety of this conservationist camp.

Massive mounds of golden sand look like a desert landscape randomly plopped in an Arctic forest.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

The ruins of this Alaska gold mine form a gorgeous ghost town.

This frozen tunnel in central Alaska is both an engineering feat and a valuable climate classroom.

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

148 feet long and in the middle of a verdant forest.

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.