Silver in the hills led to the speedy creation of this boom town and a lack of it saw the town abandoned nearly as quickly.

Limestone caves with spectacular showcase chambers.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

Run by members of the Tohono O'odham Nation, this community farm nurtures traditional desert cultivars.

A rare wayfinding portmanteau of “Street” and “Avenue.”

One of the oldest Mexican restaurants in the United States air-dries its trademark beef in a dangling outdoor cage.

This gracefully curving formation looks like a massive wave that was suddenly turned to stone.

The longest fence in the world stretches over 3,000 miles to keep the dingoes out.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

This strange geological landscape erupts with sudden bursts of water.

A glacier pocked with ice caves and surrounded by rainforests.

WWI hospital ship lost in a cyclone turns up on the coast of Fraser Island, where she remains rusted and forgotten.

The only pollutant in the clear blue water is sunscreen.

A 200-year-old bar is all that remains of one Mississippi River town's rough-and-tumble past.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

Pivotal home of Nobel Prize winner Pablo Neruda.

What was once a unique system of urban elevators is turning into a mechanical ruin.

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

A painting in the historic Cathedral Basilica depicts Jesus and his disciples dining on a traditional Peruvian menu.

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

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.

This demon atop the Notre-Dame de Paris looks utterly bored.