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

This dramatic sea spire is home to the world's rarest insect and is part of the lost continent of Zealandia.

The world's tallest slum.

The design of the Palacio Salvo has been described as "a lighthouse on top of a building."

Sleep in a glass pod dangling off a cliff.

One of the world's tallest waterfalls wasn't revealed to the world at large until 2006.

A remarkable geological formation resembling a forest made of stone.

This scalding hot river was thought to be a myth until one geoscientist made it his quest to study the mystical waters.

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

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

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

An Ecuadorian haberdashery that sets the record straight about the so-called "Panama" hat.

This Ecuadorian cemetery is home to a jaw-dropping topiary wonderland.

A swing to dangle you off the very edge.

An explosion of natural color known as "the river that ran away from paradise."

This picturesque mansion has gone from opulent ruin to nature museum.

Spanish religion mixed with local architecture has yielded a network of churches unlike any other.

This observatory high on a hilltop in the center of Santiago got its start in 1852.

The “City of Stairs” sits high in the Andes, above the world’s largest underground copper mine.

A record-breaking pool that uses computers to turn ocean water into cleaner, private swimming water.

This odd Chilean waterfall-cano hotel must be entered via a rope bridge.

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

What killed this humpback whale is a mystery, but its remains have become legendary.

A stunning Catholic cathedral built by a curve-loving communist in Brazil’s newly created capital.