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.

Romania's "Red Ravine" is a little-known natural wonder that bears a resemblance to the Grand Canyon.

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

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

A long, winding trek rewards you with a gorge so captivating it inspired a painting in the Tate.

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

Rare recess caves fill this unbelievably beautiful Ohio park.

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

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

Come for the sustainable organic chocolate, stay for the sustainable organic booze.

A heartbreaking monument showing the last morning in the life of Jane Griffith.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

This Fifth Avenue church has long been the favored worshiping place of Broadway actors and vaudeville performers.

A semi-scholarly approach to sex.

Take in a rare, face-to-face glimpse of Lady Liberty at this tucked away Red Hook park.

Sniff the Titan Arum's rotting flesh.

A trash dump made beautiful by nature's power.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

This pebble beach is so beautiful that taking its rocks is against the law.

Cliffs full of fossils at the portal to England's Jurassic Coast.

A hundred and twenty year old twelve story lighthouse located on a beautiful Indonesian island.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

This black shoreline is made up of exploded lava particles.