Eurasia's most difficult place to hang out, and farthest point from sea access.

Some of the world's only freshwater seals live in one very special lake in Russia.

A jagged silhouette of shamanistic stone heaps rises from the shore of this dazzling mile-high lake.

Unusual, mushroom-like rock formations caused by weathering and water erosion, set to disappear, according to geologists.

Towering basalt columns, a creation of fire and ice.

See massive fossils that are over 200 million years old in northeastern Arizona.

Fossils, railroads, and waterfalls!

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Garden dedicated to native carnivorous plants and site of huge flytrap heist.

The rocks in this arid basin leave trails of movement behind them.

Half of a waterfall goes into the river while the other half seems to disappear.

Ancient human, animal, and geometric figures drawn in the earth.

One of the world's most definitive collections of musical instruments, spanning all cultures and historical periods.

Resonating tubes make music from highway overpass.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

A huge musical instrument played by the ocean.

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

A metal tree emits eerie, melodic notes on top of Lancashire's Crown Point.

This sculpture is an instrument played by the swell of the seas.

When the rain falls, this drain system turns into a musical instrument.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

A musical instrument played by the sea.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

Despite its name, this route in southern Utah offers a heavenly day trip.