Living fossils in this remote Australian bay provide a glimpse of what Earth may have looked like 3.5 billion years ago.

Iron Age runes and ruins hide in plain sight along this Portuguese beach.

This massive subterranean fissure is known as the "underground Grand Canyon."

Spend the night in this formerly abandoned traditional Scottish village.

The remains of Crystal Palace Great Exhibition of 1851.

Houses are tucked between, on, and underneath giant boulders.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

Every fall this lake mysteriously drains, like a bathtub with the plug pulled out.

The frozen bubbles that form on the icy surface of this Canadian lake contain enough methane to create a small explosion.

This ghost-town bar has bullet holes and plenty of stories lurking within its walls.

Saved by a logger, this Douglas fir is one of the last great old-growth trees in Canada.

Defying all odds, this lonely little tree found a home on a log sticking out of a Canadian lake.

A popular place to pick up prehistoric coral fossils from the time when Michigan was an ocean.

The natural hot spring that was integral to the creation of Canada's first national park.

A stone wall commemorates the legend of a ferocious dragon who literally got his butt kicked by a knight.

A breathtaking viewing platform over the Alps.

The last occupied troglodyte dwellings in England weren't abandoned until the 1960s.

Hundreds of enormous icebergs drift through this waterway every year.

Buy a token from the liquor store and you can make this beast spew flames on command.

Legend says this tiny ancient island is the lost ancestral homeland of the Aztecs.

The trunks of 3,000 year-old trees lurk beneath the surface of this crystal clear lake in Oregon.

Live data is transmitted from the Atlantic coast to instantly recreate the ocean waves in this fountain at the NOAA headquarters.

A tunnel of hardened lava along Maui’s famous Road to Hana.

A series of labyrinths in the Nevada desert inspire meditation and calmness.