A Nesting Doll of Churches.

The yawning maw of this pagan visage is said to bite off the hands of liars.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

It took 82 years and four different plaques to finally get the story right.

On this tiny spot of land in the middle of Lake Titicaca the only ones who do the knitting are the men.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

This stone complex marks the urban center of a lost civilization.

A fascinating little museum all about the rich history of Peru’s famous plant.

The Uros people live on floating reed islands in lake Titicaca.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Constructed on the ruins of a convent, this tower saved countless lives.

An abstract monument to a symphonic composer.

The celebrated eyesore created by starry-eyed sweethearts.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

The Arctic Circle runs through this isolated spot north of Iceland.

A giant concrete orb in far north Iceland marks the ever-shifting boundary.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

This elegant arc of a waterfall marks a religious turning point.