The largest greenhouse in the world is home to over one million types of plants.

A serpentine highway twists and turns over the treacherous Norwegian Sea.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

Underwater restaurant at the coral reefs of Eilat.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

Famously misunderstood wonder of the ancient world

Experience park where visitors are told to expect the unexpected.

270 million year-old forest of stone.

A city built from mud and known as the "Manhattan of the desert."

The purported world's shortest international bridge connects a homeowner in Canada to his backyard in New York.

An abandoned saucer-shaped monument in the Bulgarian mountains.

Ancient and modern architecture are joined in Louis Kahn's monument to democracy.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

A open air theatre built on a cliff by an eccentric British woman.

New York City's smallest piece of private property.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

An island said to shake with the current.

Marvel of green building techniques that sings with the wind.

Natural cathedral designed by Italian artist Giuliano Mauri.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

London's smallest police station is barely the size of a phone booth.

Known as the most dangerous bridge in the world, the Hussaini Hanging Bridge is only one of many precarious rope bridges in Northern Pakistan.

A thin pane of glass keeps visitors from sliding off this futuristic skywalk.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.