Everything you always wanted to know about borates is here.

Where NASA's satellites and rovers phone home.

Decommissioned experimental solar facilities that pioneered solar energy technology.

Etched into a dry lake bed, this massive directional indicator is accurate without magnets.

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

These colossal desert barcodes have been fine-tuning spy satellites for decades.

A dry lake is what remains of a community founded on a real estate scam.

The "Kill Bill Church" was transformed into a place of worship after a long Hollywood history.

Hundreds of trees made from glass bottles make up this forest on Route 66.

The smallest Mexican land grant in California was given, and then taken from, a 19th-century teacher and nurse.

America's first nuclear-powered merchant ship is now a time warp to the atomic age.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

Next to the Leaning Tower of Pisa is a cemetery home to ancient sarcophagi and disturbing murals.

This insurance company building reminds customers that witches, bears, and gnomes are out there, best be insured.

The site of the notorious Camp Sumter Prison is now a peaceful memorial.

Despite a recent paint job, the factory still sits empty.

An eponymous directional signpost erected by the first president of the United States.

A giant time capsule not scheduled to be cored until 2040.

Endless rows of boxes of paper records line the hallways of the archaic federal facility where guns are traced.

An eerie site of reverence for those who have completed an epic journey.

According to local lore, this narrow passageway through two large rocks was accidentally created by the devil himself.

This advertisement for talcum powder was painted on the rock face and has since defied removal.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

Step inside Lucy, the world's largest "elephant."