The tallest sea cliffs on the Southern Hemisphere are a climber's worst nightmare.

This extraordinary geological oddity resembles human-made pavement.

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

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

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

This dramatic sea spire is home to the world's rarest insect and is part of the lost continent of Zealandia.

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

An abandoned railroad tunnel is now filled with bioluminescent bugs.

A high point in Vancouver kitsch.

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

High atop a Mexican rainforest mountain, this ancient pyramid once drew pilgrims countries away.

Extraordinary sculpture garden created by an eccentric English poet.

The sign at the garden gate reads: "These Plants Can Kill."

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

These fantastically named natural pools look like something out of a Scottish myth.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

A kaleidoscopic warehouse-maze of handmade neon signs.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

Stroll through a wonderland of stupendous moss-covered trees.

This Tuscan lake hides a 13th century town that is still visible when the water recedes.

This local emblem is the oldest and largest dragon tree in the Canary Islands.

A breathtaking and biodiverse wilderness in the mountain setting of Ernest Hemingway's "For Whom the Bell Tolls."

Walls of stone rise up from sinkholes caused by underwater erosion.