The red crab exhibits one of the most spectacular migrations on earth, despite manmade obstacles.

Is there such thing as too many fruit bats? Not anymore.

An incredible garden taking over the interior of a massive sinkhole.

Nine limestone rock stacks on Australia's "Shipwreck Coast."

Rainforest filled with record-holding eucalyptus.

Prehistoric park filled with the fossils of dozens of extinct species including Australian megafauna.

A sparkling sandstone cliffside that's worth a visit while it still exists.

The unique ecosystem atop an Australian mountain is home to some colorful inhabitants.

Built over an abandoned train yard, this hidden gem is full of winding paths and offers gorgeous views of Sydney Harbour.

The only pollutant in the clear blue water is sunscreen.

A massive stairway that almost wasn't leads to one of Australia's most scenic vistas.

This gracefully curving formation looks like a massive wave that was suddenly turned to stone.

Woven tree art gives this towering Australian woodland a touch of mystical whimsy.

A castle hand-built by a Spanish dreamer in the Australian tropical jungle.

Australian Lake set aglow by Noctiluca Scintillans.

An abandoned railroad tunnel is now filled with bioluminescent bugs.

An Australian lake whose pink hue defies scientific explanation.

One of the largest collections of wildlife art in the United States, built into the side of a cliff in rural Wyoming.

This rustic old building is said to be the most photographed barn in America.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

A miraculous natural phenomenon known as "the spring that breathes."

An architect's childhood fantasy treehouse made real.

One man's ambition created this psychedelic log home.

A beautiful geyser under environmental threat.