An underground network of massive stone arches and their skylit vaults support ruins of portico structures above.

This shuttered power plant is now Turkey's first industrial archaeology museum.

The eclectic home of a leading Turkish architect is a gorgeous piece of eye candy.

Over the centuries, this island paradise has done it all, from providing monks with ecclesiastical respite to sheltering an exiled Leon Trotsky.

No one is sure if the world's fourth-largest diamond had been found in a rubbish heap or was pawned by Napoleon's mom.

A gorgeous, Gaudí-esque stairway constructed in the city of Istanbul by a prominent Jewish family.

Large miniature theme park with 100-plus models.

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

Turkish adventurer antiques in the heart of the Grand Bazaar.

A meow-velous tribute to a beloved street cat, made famous on the internet.

This devil-dancing ceremony now celebrates a miraculous image of the Virgin Mary that appeared to a modern-day Robin Hood in a mineshaft.

This collection of ancient, mountaintop, underground tombs was once hidden by decades of bloodshed.

The enormous appendage offers spectacular views of Colombia's Huila Department.

70,000 empty bottles of Coke comprise an ad seen only from the air.

Walk on a glass floor suspended over ancient mummified remains.

An explosion of natural color known as "the river that ran away from paradise."

These unusual stone structures are actually fish traps crafted by an ancient civilization.

This small uninhabited island offers Galapagos-like biodiversity.

This Ecuadorian cemetery is home to a jaw-dropping topiary wonderland.

The gondolas let you glimpse a bird's-eye view of one of the world's highest capital cities.

An abandoned Ecuadorian prison that once held ex-presidents and notorious con artists is now a carceral museum.

Legend says if this neo-Gothic basilica is ever officially completed, the world will come to an end.

This overlooked, beautiful convent hides an original Hieronymus Bosch among its many treasures.

This 12-inch-tall wooden sculpture of a winged Virgin Mary has inspired much devotion and countless replicas.