This huge, disused viaduct is now a crumbling concrete underworld of covered in years of graffiti.

This Central New York ghost town was once a prosperous railroad community.

This old cement mine has been used as everything from a mushroom farm to a recording studio.

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

The dairy farm in upstate New York where nearly half a million people gathered for three days of peace and music in 1969.

These mouldering mansion ruins remember a time when the Catskills were nothing but luxury.

The final resting place of one of the United States's greatest poets.

The mighty room where the poet spent most of her life is available to rent for an hour or two.

Founded by the famed children's book artist, this museum spreads an appreciation of the arts through picture books.

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

A steampunk wonderland that preserves America's history of industrial innovation.

An easy-to-miss garden in Boston's North End honors the mother of JFK and others who lost children in WWII.

One of the indelible moments of the American Revolution took place at this location.

A morbid secret lies hidden within the beautiful walls of the Boston Athenaeum.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

America's original house of worship for Spiritualism, the religious movement based on communing with the dead.

An alley way dedicated to graffiti and street art is a constantly changing street gallery.

This former Masonic hall has been turned into an art project that uses even more metaphysical iconography.

Museum dedicated to awful artwork.

This hidden labyrinth offers walkers some brief peace of mind.

A beautiful Victorian-era cemetery, complete with a miniature village.

The Mysterious Witch Bonney, a haunted statue in an old industrial city.

Former abode of notable poet, complete with literary references and stories of ghosts.