This hospital fell into ruins after failing to act as the advocate for the mentally ill it was designed to be.

Once in a state of dilapidation, this candy-inspired fortress is now being revived.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

From scholastic to sepulchral - now under reconstruction.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

Tucked in the back of this amazing antique store is an important piece of medical history.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Peek through the gates at this oasis from the city, full of Old English charm.

A museum devoted to bringing to light forgotten or neglected histories through exhibitions, education and public programming.

One artist's love letter to his city and its citizens plays out across dozens of bright murals painted on the sides of decrepit buildings.

The oldest farmer's market in America is so ancient it was approved by the King of England.

Arlington Cemetery exhibit dedicated to death and grieving.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

This jail which was in service for over a century is now open for curious visitors.

The headquarters of the Fraternitas Rosae Crucis, complete with Rosicrucian pyramids, all in the Pennsylvania woods.

A failed piece of Orientalism has become the proud symbol of a community.

Local lore claims this park is named after a young woman who jumped off a cliff.

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