A stratovolcano located in the south of Iceland, with a long history of charted activity and a rich mythology attached.

The location of the world's first telescope demonstration.

A bizarre house filled with an astounding array of collections.

One of Antoni Gaudí's least-visited works, an homage to Catalan patrimony that mixes neo-Gothic with Modernista forms.

A Milanese café entirely designed by the American director Wes Anderson.

This incredible viaduct was part of the Victorian railway boom and helped the Midland Railway navigate tough terrain.

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

Climb down into the largest sinkhole in Qatar.

Raging waters have created a strange geological site that looks like something off of a progressive rock album cover.

A massive natural rock arch gives the Tuscan mountain its own window to the sky.

After millennia of erosion by sand and churning water this Brazilian valley now looks like a lunar fantasy.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

Rare recess caves fill this unbelievably beautiful Ohio park.

This extraordinary geological oddity resembles human-made pavement.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

A windswept necropolis carved into the rocks overlooks the "most Portuguese town in Portugal."

This rare collection of human deformities displays fetuses with two faces, one eye, and "mermaid" legs.

This ancient village provides insight into the complexity of the pre-Columbian Fremont Culture.

This ghostly Alaska village still clings to a steep cliffside despite having been abandoned for over 50 years.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.

An Oxford museum where visitors can have tea with the Mad Hatter and climb through the wardrobe to a fantasy land.