Once considered a marvel of engineering, this 107-mile canal played an integral role in building New York City.

This unassuming retro burger joint was billed as “diner of the future” at the 1939 World's Fair.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

A wooden rollercoaster that still delivers a thrill.

Devotional offerings and pleas for intercession are left at this Depression-era shrine inside a nature preserve.

Eccentric stone cairns built on a public New York City beach.

The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.

An allegedly haunted testament to a local businessman's desire for status, posterity, and charity.

Visitors to Salt Springs State Park are encouraged to literally put their two cents in Penny Rock.

A pair of 19th-century granite markers symbolically record where the state boundaries of New York, New Jersey, and Pennsylvania intersect.

One of the U.S. Forest Service's only mansions is outfitted with a dinner table for floating food.

A winding, cliffside stretch of road overlooking the Delaware River.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

A retired subway car stands alone in a field in the middle of Queens.

The famed poet was born in 1819 in a farmhouse built by his father.

A millionaire's abandoned swimming pool from the gilded age of one of America's most distinguished families.

A monument to the center of the North American continent may be off by a few miles.

This tiny church near Sleepy Hollow contains Henri Matisse's last work, a rose window, and nine windows by Marc Chagall.

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.

The oldest continuously inhabited street in America.

One of many reminders of Tesla's scientific contributions overlooks the falls which inspired him.

This massive, ancient stone was disassembled and then put back together again.

A monument to the 17,000 Chinese who worked and died to build Canada's Pacific Railway.

A mysterious, abandoned building rotting on the Brooklyn waterfront.