Built hundreds of years ago this downtown iron barrier once protected a much despised king.

More gold than anywhere else, ever.

One of the largest ancient geoglyphs in the world is a tall desert god used for predicting the weather.

70,000 empty bottles of Coke comprise an ad seen only from the air.

The Uros people live on floating reed islands in lake Titicaca.

This space-age looking obelisk rises over a city in the rainforest, meant to resemble the local castaña tree.

The world's largest clay lick, where parrots gather to snack.

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

This Peruvian canyon is filled with geometric salt pools that have been being harvested since the Incan empire.

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.

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.

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

This dormant volcanic crater has been converted from a roiling pit of magma to a pleasant hiking spot.

The ghostly remains of an accidental sea.

A hand-built folk art installation covered with messages of God's love.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

The childhood home of Henry Jones Jr. is now an adventure-themed bed and breakfast.

A house carved into a rock in the 1940s.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

An absolutely beautiful 200-foot stained glass installation traces the evolution of knowledge.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

Try not to get slimed in Tribeca.