Right up until the 20th century this network of man-made caves was the biggest village in Eastern Armenia.

Centuries before the modern seismograph, Armenian monks measured quakes with this tilting pillar.

The world's longest nonstop reversible cable car soars through spectacular scenery to the medieval Tatev Monastery.

Called the "Armenian Stonehenge," this ring of menhirs pierced with holes may be a prehistoric astronomical observatory.

After visiting hours, this picturesque waterfall is essentially turned "off" to be used for hydroelectric power.

Nestled in a peaceful valley, this Armenian monastery may have been saved from Mongols thanks to the eyes of God.

Hundreds of intricately carved Armenian stone crosses can be found within this huge cemetery.

This ancient monastery complex was transformed from an island to a peninsula when the lake was partially drained.

Men and special assistants stand by the road to sell the day's catch in this lakeside village.

This series of Armenian caves held the oldest brain, shoe, and winery in the world.

A 19th-century politician who died after walking home in a blizzard is honored with this Manhattan statue.

19th century cemetery hidden in Brooklyn's Prospect Park.

The Father of the Erie Canal has a magnificent grave marker that redefines the term "final resting place."

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

Possible relics of the ancient Roman city are hidden in this restaurant's façade.

Commemorating the spot where the famous scientist fed his pigeons.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

A commemorative plaque hides a door that leads down to the New York Public Library's underground book bunker.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

The former home of the reclusive "Weird Wendels" who dominated New York real estate a century before Donald Trump.

Phil Mortillaro uses keys to bring art back to the Village.

This slender three-story building has also had several famous residents.

Recovered suit of a cannibalistic West African gang.