Plot your trip through the city on the sidewalk.

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

An abandoned Gold Coast-era mansion once intended for the exiled ruler of Albania, who never arrived.

Small monoliths of several varieties of stone sit alongside a wooded path in the Bronx.

The biggest museum dedicated to insects in North America, one of the largest in the world.

A perfectly running 230-year-old silver automaton and music box.

A yoga studio and venue for "chill-out parties" in a former chicken slaughterhouse.

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

A Manhattan Episcopal church with an eerie underground crypt.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

Island where motor vehicles are banned -- home to the only carless highway in the United States.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

America's greatest forgotten garden and the former stomping grounds of Son of Sam.

On the top floor of an upscale department store stands a lavish restaurant housed in a replica of a luxury French dining car.

This dilapidated castle-like structure overlooks the Hudson River at one of its widest points and was once home to nuns.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

One man's swirling six-acre monument of stone.

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