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

Huge stone depressions which may have acted as an Incan agricultural experiment.

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.

The large collection of pre-Columbian pottery might make you blush.

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

The hundreds of movies and television shows shot in this high desert town are commemorated in a unique museum.

A charming desert roadside bakery that produces 10 times more bread daily than it has residents in its town.

The echoes of a railroad town that solemnly mark the end of the line.

Travelers leave tea kettles in a remote part of Death Valley as part of a mysterious, decades-old tradition.

The tragedy of the Japanese internment camps is remembered here by a stark "Soul Consoling Tower."

A massive hydrovolcanic explosion left a half-mile wide crater in Death Valley.

This old mining town, deep in the California desert, has a year-round population of one.

The rocks in this arid basin leave trails of movement behind them.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

This crumbling Death Valley mining complex was known for its use of giant, 20-mule team wagons.

William Blake claimed to have painted this gothic masterpiece after encountering this nightmarish being in a vision.

A quiet memorial to those who died saving others in the heart of the City of London.

Public access to clean drinking water was an instant hit among the masses.

Eclectic final resting place of the controversial explorer.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.