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 seawater playground of gilded-era San Francisco burned to the ground in 1966.

Concrete strongholds stand guard over the Golden Gate.

An vast warehouse of everyday treasures in Berkeley, CA.

Thousands of crosses and markers for soldiers who lost their lives in Iraq and Afghanistan blanket a California hillside.

A huge collection of rocks, gems, and crystals.

Art Deco stylings conceal the true nature of this bridge.

The California capital city once stood 10 feet lower than it does today.

This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

A petroglyph map of the upper Snake River carved by prehistoric hunter-gatherers.

A statue of the owner stands outside of this museum, once the most popular brothel in town.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

Make it an offering.

This perfectly preserved Chinese medicine shop was untouched for decades before being reopened as a museum.

The oldest apple tree in the Pacific Northwest.

You would never come across this tiny green oasis if you didn't know it existed.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

The bronzed skull of a beheaded traitor was affixed to the city gate in the 17th century.

Christ's blood preserved in a Belgian town.

This interactive sculpture allows visitors to leave a message in case a friend passes by.

This heavily worn bas-relief was once an honored fertility symbol.

This legendary giant, born from vegetables, terrorized townspeople and cheated local children in games.

This former guildhall with a bacon-like exterior is now home to a museum covering 600 years of Antwerp's musical history.