This peaceful Massachusetts graveyard was one of the first "garden-style" cemeteries in America.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

Louisa May Alcott based “Little Women” on her experiences growing up in this house with her sisters.

One of Ireland's most infamous prisons for rebels including men, women and children.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Impossibly life-like natural history models created out of glass by a father and son.

Palatial mansion estate used in films including "Flowers in the Attic" and "The Witches of Eastwick."

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

This small section of the Sleepy Hollow Cemetery is rotten with famous authors' graves.

Three prestigious academic collections come together to create a world-class natural history museum.

Friction between grains of sand cause a curious "singing" sound.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

Museum dedicated to the terror regimes of Hungary.

The Habsburgs' royal collections of art and wonders.

Dine amidst exotic plants at this former royal greenhouse.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

The beautiful baroque library of the Hapsburg empire.

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

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

Dedicated to one of the darkest moments in Irish history, this memorial has faced its fair share of backlash.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

The world's largest piece of copyrighted artwork.

This headstone marks the grave of an 11-year-old boy killed during clashes in the streets over the boycotting of British goods.