This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

Every year, the colorful murals of Montreal get a complete makeover.

Futuristic apartment blocks are the backdrop for Montreal surfers hangin' ten on the Habitat '67 standing wave.

Montreal's giant farmer's market is a foodie's best friend, especially in the winter months.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

This replica of the Greek structure is in the heart of Nashville.

A quiet and contemplative oasis in the middle of New York's bustle and riot.

An artist's cute bronze subway sculptures belie his violent artistic past.

A bit of retro transportation flair preserved in the world's largest department store.

Lie in a hammock where George Washington stood.

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

A popular European tradition makes its way to the states on one of America's most famous bridges.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

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

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

One of only two commuter aerial tramways in the United States.

A dilapidated dock tells the story of Titanic's missed arrival.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

A crumbling hospital from the 1850s on Roosevelt Island.

This wall on a street corner in Lower Manhattan has been a blank canvas for a rotation of renowned artists since the 1980s.

This city park was once a lookout point for George Washington’s army during the Battle of Brooklyn in 1776.

This enormous banquet-themed artwork honors over 1,000 notable women throughout history.

Ride the subways of yesteryear.