The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

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

The famous author's cottage hideaway.

For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

A natural gas leak provides a flickering flame beneath a waterfall.

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

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

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

Sniff the Titan Arum's rotting flesh.

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

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

Try not to get slimed in Tribeca.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

The huge collection of paintings of the American West is one of Denver's best-kept secrets.

This naturally-sourced hot spring is now home to a clothing-optional resort.

Railways may have forged this quintet of lovely tunnels, but now they are open to hikers.

This expansive bridge in the Canadian wilderness was originally just built for friends.

An old world fairytale-land with over 350 fairy folk figurines hidden amongst 800 year old cedars.