Nazca pilgrimage site covering 370 acres is a popular stop for archeologists and looters.

A remarkable geological formation resembling a forest made of stone.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

A remote candy-striped mountain in the Peruvian Andes straight out of the pages of Dr. Seuss.

Keshwa chaca, among the last handwoven Incan bridges, crosses Apurimac Canyon in Peru.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Where a rare geological phenomenon created a section of rock that resembles a checkerboard.

Once a strategically imperative naval base, portions of this Bermuda dock complex now serve cruise ships.

Storms, funding, and in-fighting have kept this Bermuda church from ever being completed.

This abandoned NASA launch site is now a memorial to a trio of astronauts who were killed there.

An abandoned, decaying sculpture garden built by an eccentric physician in the 1920s now looks more like a forgotten cemetery.

A 2,500-pound wooden nickel makes this woodworking museum easy to spot from the road.

An abandoned aircraft sits submerged in a lake in the Alaska wilderness.

One woman's dream became a train hotel in her backyard.

These once-beautiful historic graveyards are set against the barren Virginia City hills.

Beneath a Virginia City bar is the entrance to an abandoned gold mine.

Historic home to one of the most famous women pioneers of the 19th century.

A jagged silhouette of shamanistic stone heaps rises from the shore of this dazzling mile-high lake.

No one knows the origins of the mysterious stone ruins discovered on a hillside in Halifax.

The remains of a 37,000-year-old prehistoric society were discovered in this mammoth cave, one of the largest in Asia.

The abstract sandstone rock formations at this Algerian national park are rich with prehistoric art.

Eastern zen meets Western grit in these four little trees growing out of a rock on Lake Tahoe’s Nevada shore.

Home of the International Space Hall of Fame.

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.