The explorer Captain Cook may have named it White Island, but the Maori call it Te Puia o Whakaari – The Dramatic Volcano.

Deadly scalding and one of the largest hot springs in the world.

These two delightful animal-shaped buildings host a visitor center and wool shop.

One man's dream has turned into this naturally growing chapel made of almost nothing but trees.

The oldest church in the Estonian capital is home to over 100 fantastical cemetery coats-of-arms.

A trio of giant wooden megaphones turn up nature's volume in this Estonian forest.

A gigantic statue of a Russian soldier watches over the ancient city of Plovdiv, a prominent reminder of the Soviet period in Bulgaria.

A display of torture devices used in the Spanish Inquisition and other scourges of medieval Europe.

It houses the remains of a 17th-century version of the Titanic.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

A gruesome memorial for those lost in this area during the Khmer Rouge genocide.

Hoax, mistake, or evidence of dinosaurs in human times?

A top secret Cold War bunker hidden beneath a Latvian spa facility is now open for tours.

The statue of a legendary giant who carried Christ and shouldered the world's sins.

Medical museum that houses most notably the taxidermied remains of Vladimir Demikhov's famous two-headed dog experiment.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

An artsy hidden staircase leads to breathtaking views of San Francisco.

A huge musical instrument played by the ocean.

This blowhole is supposedly caused by a trapped monster.

Formerly a lovely white sand beach this Hawaiian stretch is now a trap for countless tons of trash.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

This black shoreline is made up of exploded lava particles.

A true treehouse near Hawai'i Volcanoes National Park.