A Gothic cathedral created from volcanic rocks.

Sometimes an island, sometimes a rocky outcropping connected to the world by a tiny suspension bridge.

A petite white lighthouse perched on the ancient core of Stromboli Volcano.

A gargantuan crystal kingdom.

Enormous pendulum helps keep Taiwan's tallest building from swaying.

Orcas on display and in the water.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

A beautiful opera house in the heart of Amazonia has recently restarted performances after a 90-year hiatus.

A Prada store in the West Texas desert that is never open for business.

This foolish Victorian sea fort was converted to a deluxe hotel.

The glowing blue Nymphaeum of Emperor Tiberius.

An ancient monastery, a locked room, and a mysterious book heist.

Island wonderland for communist autocrats.

Harlequin costumes, signed scripts, and armor-wearing puppets.

An eccentric playboy's astounding natural history collection.

The final resting place of the poets Shelley and Keats.

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Virgil's many-mouthed gateway to the underworld.

Pivotal home of Nobel Prize winner Pablo Neruda.

This sword isn't waiting for a king to pull it out. It was placed there by a saint.

A small man-controlled waterfall powers an Art Nouveau elevator and is accessed via narrow gauge, solar-powered tramway.

A modernist landscape of water and sci-fi concrete.

A student driver's nightmare.