One of the few remaining American elm trees in New York’s Tompkins Square Park was the birthplace of a new religion.

Visit the site of a subway powered by nothing more than air--and lots of it.

Spinning silently in the lobby of an Art Deco masterwork is a massive vintage model of the Earth.

From scholastic to sepulchral - now under reconstruction.

A partially hidden wall graffitied by spectators of the 1976 Bicentennial, recently rediscovered.

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

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

Cryptic messages embedded in the New York City sidewalk.

The "Seinfeld" diner.

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

America's oldest Eastern European synagogue provided the immigrants of crowded Lower East Side tenements a space of sanctuary.

One-time largest man-made structure in the world will be a park in 30 years.

Final resting place of two dozen New York City harbor ships.

One of the most scenic falls in Massachusetts has a history of death and grim legend.

The highest point in Connecticut was incorrectly memorialized before surveyors discovered the actual spot.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

Retirement home where the actress who played the Wicked Witch of the West passed away.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

An experimental, automotive replica of Stonehenge.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Elvis's own personal tropical hideaway.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

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

At 207 feet, one of the world's longest continuous escalators.