Legend says this sacred tree was a gift from goddess Athena.

An ancient octagonal weather station named for the eight Greek gods of wind.

Deliberately hidden for centuries, the magnificent Saadian Tombs were eventually uncovered in 1917.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

The ruins of an ancient mansion sits in front of and underneath a contemporary art gallery.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

A series of waterfalls create the illusion of perpetual rainfall in this hidden gorge.

This Dutch Colonial home is the oldest remaining farmhouse in Manhattan.

New York City's only preserved family home from the 19th century.

Visit the monolithic tomb of America's most famous general.

The only home that Alexander Hamilton ever owned has a history almost as troubled as his own.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

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

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

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

A very classy 1920s-era bar right in Grand Central Station.

Mysterious 500-year-old tapestries depict a unicorn hunt.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

The flock of plastic poultry is an ode to the classic comedy staple.

The first park built over a freeway is a brutalist masterwork.

At this museum in Iceland, visitors can sample fermented Greenland shark.

Iceland's tribute to its thankless civil servants.

Travel deep inside of Europe's second largest glacier in the world's largest man-made ice cave.