Memorializing an American tragedy of massive proportions.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

"Where the ducks walk on fish."

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

This piece of peacetime naval wreckage memorializes the tragic sinking of the USS Maine--an event which sparked the Spanish-American war.

Bouncing, delightful, mechanical art at the MIT Museum.

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

Memorial to a beloved puppeteer as well as all street performers.

One of America's most historic homes also holds a startling literary legacy.

Final resting place of the author who wrote the ghost story "The Turn of the Screw," and his brother, the Harvard doctor and paranormal investigator.

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

Statue commemorating the use of ether in anesthesia.

The Boston square dedicated to the dark poet who was born nearby.

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

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

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

The tomb of Increase Mather and his son Cotton, influential colonial ministers obsessed with the occult.