One of only two remaining Victorian-era greenhouses in New York.

This abandoned factory on the Hudson River once churned out a million bricks a week.

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

Protecting the future of some of the rarest and most misunderstood mammals of North America.

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

These World War I shooting range tunnels are now haunted halls of underground graffiti accessed through the roots of a tree.

Forgotten under the construction of a new urban roadway is a small, abandoned part of town.

Church and home-museum of a 1920s female revivalist preacher with a very sordid past.

A castle that was built stone by stone by an eccentric journalist.

The house where Good Will Hunting was written is a surreal fairytale abode.

Originally the home of chewing gum mogul William Wrigely Jr, it is now the official offices of the Tournament of Roses.

The most popular attraction in Southern California was once a flock of ornery bipedal birds that pulled carts.

This 38-year old fish became a casualty of changing trends.

The most unique castle in all of Southern California, entirely constructed from repurposed materials.

"The Hoppiest Place in the World" holds the world’s largest collection of bunny memorabilia and is a singular testament of a couple's devotion to all things Leporidae.

Magical-looking cottages that inspired one of the most famous animated films ever.

This ultra-modern home clings to the slope of the Hollywood Hills on a precarious stilt.

Dioramas and animatronics lead you through the story of Bhagavad-gita, the Indian literary classic.

The rusting remains are visible sticking out of the waters of the Delaware Bay.

Priceless space junk on display in front of a local Dairy Queen.

A giant granite cross remembers missionary Father Frederic Baraga, and his safe passage across an angry Lake Superior.

The dome-shaped reservoir of this old water tower produces unique acoustic effects.

An ornate Thai pavilion in the middle of Sweden.

This Arabesque Italian castle was built with a primitive, if ingenious, air-conditioning system.