This 3,500 pound obelisk was constructed with more than 1,000 reclaimed guns.

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

The birth home of one of cinema's legendary actresses.

A monument in a town outside of Boston celebrates the visits of Edgar Allan Poe.

Supposed Massachusetts Grave of a pre-Columbus Knight Templar.

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

A tiny memorial for the year the Connecticut River almost destroyed New England.

An easy-to-miss plaque marks the building that first held this 19th-century telephone innovation.

The oldest place in Hartford is a cemetery with thousands of bodies stacked beneath the grass.

Memorial to one of the most fatal fires in both circus and U.S. history.

A bridge commemorating the actor's legacy and his Terryville roots.

British troops and Prohibition couldn’t stop this spot from becoming one of the United States' oldest continuously-run taverns.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

A uniquely lettered street sign marks the corner where the iconic word game was invented.

The boulder on which Alexander Hamilton laid his head after a deadly duel can still be visited on the New Jersey coast.

The real-life site of Ichabod Crane's infamous gourd attack.

A human attendant once directed car traffic from this structure before automated stoplights.

A bronze plaque at an intersection in Hoboken marks the place where the game of baseball first took shape.

The site of a tragic massacre that spawned a multimedia franchise.

The "Seinfeld" diner.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

One of only two commuter aerial tramways in the United States.

A dilapidated dock tells the story of Titanic’s missed arrival.

Try not to get slimed in Tribeca.