The remains of what was the most important religious complex in coastal Peru for over a millennium.

This Peruvian canyon is filled with geometric salt pools that have been being harvested since the Incan empire.

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.

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

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

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

This abandoned bridge to nowhere stands secluded in the woods of a Cleveland suburb.

The overgrown remains of an old rail bridge rise above the valley like ancient Greek ruins.

This restaurant proudly displays bread signed by the 39th president.

The dairy farm in upstate New York where nearly half a million people gathered for three days of peace and music in 1969.

Rare recess caves fill this unbelievably beautiful Ohio park.

The largest Buddha statue in the Western Hemisphere is just 50 miles north of NYC.

An enormous goose sits atop this nest-shaped home.

The little-known final resting place of one of America's greatest writers.

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

This feline raises a friendly paw at drivers barreling toward the freeway.

This architectural stunner is one of the few surviving Egyptian Revival theaters in the U.S.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

This old residential building was once the largest flour mill in the world.

The only arched bridge made of stone on the entire Mississippi River.

20,000 pieces in a Frank Gehry-designed building.

A circle of giant painted vases in the former pottery capital of the United States.

Inside the unassuming cemetery chapel is a magnificent stained glass window and mosaics.