This whimsically unique butterfly farm focuses solely on creating habitats for the gentle insects.

This forlorn park is the result of a failed investment turned tax dodge.

The "Skinny House" is made from scrap, salvage, and a neighbor’s kindness.

A former connection to City Island, it has been abandoned since the 1930s.

This old estate is a remnant of when the Bronx was a popular summer destination for wealthy New Yorkers.

Legendary private island in the Bronx...devoid of rats.

The loneliest island in New York.

An isolated beacon with a history of grisly murder and a view of some of literature's greatest inspirations.

The former estate of the Guggenheims, part of the opulent Gold Coast that inspired the Great Gatsby.

The abandoned grounds and derelict greenhouses of this once-magnificent Edwardian estate are now a nature preserve open for exploration.

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

Some of the earliest burial grounds of New York State are to be found hidden away in this quaint town.

Spies, love letters, and ghost stories have all left their mark on this home-cum-museum.

Whale bones, scrimshaw, and sperm oil make up just a part of this comprehensive collection of whaling history.

Now a retreat center for the faithful, it once provided training for clergy—but it began as a farm owned by a famed financier and his opera singer wife, who built a surprise in the backyard.

An Escher-inspired library dedicated to the wonders of the human mind, yet closed to the public.

Mansion and shopping center used in the 1975 film "The Stepford Wives."

Home of Philip Johnson, one of the 20th century's most influential architects.

Glacial erratic or man-made dolmen? It probably wasn't druids.

American artist J. Alden Weir purchased this 60-acre estate for $10 and a painting.

The final resting place of a circus performer who went by the pseudonym "General Tom Thumb."

The once abandoned ruins of a Victorian beachside amusement park are now back in working order.

The intriguing personal collection of a professional demon-chaser.

A humble air museum located in an original World War II aircraft factory.