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

Keshwa chaca, among the last handwoven Incan bridges, crosses Apurimac Canyon in Peru.

A remote candy-striped mountain in the Peruvian Andes straight out of the pages of Dr. Seuss.

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

A mysterious ancient network of thousands of perfectly straight lines stretching across miles of Bolivian desert.

Astronomical observatory above Lake Titicaca.

A desert that evokes the surreal.

Death road of Bolivia.

On the outskirts of a desert trading village high on the Andean plain, steel giants have been destroyed by salt winds.

A seemingly endless landscape of pure salt stretches far across Bolivia.

The angel of death appears to weep black tears at this grave marker.

This awkward aquarium sculpture is one of the strangest statues in Chicago.

These abandoned grain silos and tunnels are an urban exploration dream.

This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

Combination beer garden and music venue in the heart of Wicker Park.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

Former meatpacking facility turned vertical farm and sustainable business complex.

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

Chicago's largest cemetery is full of beautiful Victorian monuments and more than a few ghost stories.

This unauthorized stone mermaid was secretly carved out of public stone before being permanently preserved.

A century-old network of freight tunnels underneath the city's historic business district.

A haunting statue called "Eternal Silence" has quite the reputation among visitors with active imaginations.

An antiquated German apothecary on Chicago's North Side.

A lush green oasis in the middle of Chicago.