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

This candy-colored storybook village originated as a 19th-century Methodist campground.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

Rhode Island's tallest building bears a resemblance to the "Daily Planet" building and has been empty for more than five years.

The idyllic colonial home of the artist behind the famous portraits of George Washington and Thomas Jefferson.

This blue behemoth of a bear is a colorful homage to Brown University's mascot.

Only a shrine remains at the site of the catastrophic nightclub inferno that killed 100 Great White fans.

The oldest still-operating tavern in the United States was once owned by a pirate.

A simple Colonial home with a past haunted by death and madness.

To avoid the demolition costs this abandoned drawbridge was simply left in the up position.

A crumbling stone stable and carriage house are all that remain of a manse that was once filled with Egyptian artifacts.

Millions of numbers carved in glass represent the tattoos forced upon victims.

The strikingly modern structure stands out among the brick buildings speckling the Harvard Business School's campus.

The only remaining place where you can play this century-old game for cash.

The headquarters of one of the world’s longest-running humor magazines bears a noticeable resemblance to a head wearing a Prussian helmet.

This small glass cube is a peaceful out-of-the-way sanctuary at the busy airport.

This picturesque abandoned home is rumored to be a spite house.

This tiny, painted door at the base of a tree stump has been a fixture of the Harvard University campus for decades.

Century-old shop, specializing in Occult products.

A museum and research center dedicated to preserving the history of Rolls-Royce and Bentley motorcars.

Journey through a collection of over 35,000 Halloween items from all generations.

An ode to filmmaker George A. Romero, who used the mall to film an iconic horror movie.

The abandoned coal loading dock is a canvas for unsanctioned art.

South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.