6000-year-old coal fire moves one meter per year.

Mysterious hillside with a continuously burning natural fire.

A fiery crater has been burning in the Karakum Desert since 1971.

Natural earth mounds formed in the far north.

Ice roads, deep holes and 3,500 pounds of diamonds.

There was a top secret plan during World War II to seal a group of soldiers inside the rock.

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

From Coke II to Google Glass, this exhibit features some of the most spectacular commercial flops.

Granny Smiths and Fujis can both be traced back to Kazakhstan, where apples still grow wild.

A magical work of architecture where a wind turbine enables monks to levitate.

A disconnected rotary phone for "calling" lost loved ones offered a unique way of dealing with grief in disaster-stricken Japan.

A plaque commemorates the spot in the Oregon woods where the first-ever Geocache was hidden.

Cold storage for agricultural biodiversity.

The world's northernmost brewery uses water from a 2,000-year-old glacier to create its beer.

In the northernmost city in the world, it's illegal to be buried because it’s too cold for bodies to decompose.

Eulogizing an unknown man's unusual demise.

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

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

The self-mummified monks of Japan.

Thanks to a spelling mistake this bizarre beaver-tiger hybrid became the symbol of a Siberian town.

A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

This extremely remote border crossing was closed to prevent smuggling and looting.

One of the tallest bell towers in Italy plays a particular melody at just two times each day.