Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Only a fragment of this 15th-century Dance of Death survives today.

The "Bridge Over the Atlantic" lets you cross the waterway in mere seconds.

An impressive if morbid collection of mummified remains from different eras of the region's history.

The ruins of an ancient pyramid built by the mysterious Chupícuaro civilization.

The floor of this spectacular Baroque sanctuary is covered in memento mori.

Legend says a witch conjured the world's third largest whirlpool to protect Scotland from a nasty pirate.

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.

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.

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.

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

A charming beach town in Turkey captures all the colors of the rainbow.

Huge otherworldly domed rocks on the shore of a deadly lake.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

The ruins of the "20-year town" lay out among the mountains of Alberta.