A black and white solution to the Bolivian city's traffic problems.

In La Paz's huge, city-sized cemetery, the deceased are stored in rows of apartment-like buildings.

This giant pocket watch is the third iteration of a local landmark that has been standing just off the Santa Fe Plaza for over 100 years.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

One of the few beardless depictions of Lincoln, George Grey Barnard's 1917 statue was denounced by many—including Lincoln's own son.

This historic Ohio bridge is adorned with fanciful locks left behind by loving couples.

At the center of this cemetery stands a 2,000-year-old burial mound of the Adena culture.

The mounds at this site were reconstructed with the help of archaeologists and historians.

A 2,000-year-old Adena burial mound located along a busy street in Columbus, Ohio.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

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

The oldest brick house in the state of Ohio.

Mussolini gave Cincinnati a bronze statue of Romulus and Remus suckling at a wolf's teats.

A museum of the dime museum that features weird entertainments of yesteryear, from feejee mermaids to flea circuses.

Comprised of Spanish war cannons, this sculpture once graced the bow of a WWI warship.

A renowned Civil War veteran, this Bald eagle now presides over the Wisconsin State Assembly.

This rooftop sign has been confusing Milwaukee-bound airline passengers for decades.

An off-the-beaten-path place to literally hang beneath Milwaukee's Holton Street Bridge.

A jukebox headstone marks the grave of the Cleveland disc jockey credited with coining the term “rock 'n' roll."

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

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

Designed by Alfred Caldwel, this landscape showcases his vision of a native garden.

An obsolete, vanishing traffic device warns Cincinnati drivers away from middle-of-the-road obstructions.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.