The largest collection of historic military firearms in the United States.

This Indianapolis landmark offers a secret panoramic view of the city. 

Its vintage camera collection gives a snapshot of the past as viewed through a photographic lens.

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.

Unicorns, elephants, and bears, oh my!

A bronze statue of Mister Rogers in the neighborhood where he grew up.

A larger-than-life statue of America's favorite sundae marks the place it was invented.

The famed poet was born in 1819 in a farmhouse built by his father.

Now a retreat center for the faithful, it once provided training for clergy—but it began as a farm owned by a famed financier and his opera singer wife, who built a surprise in the backyard.

The world's oldest soul food restaurant is also one of its best.

Largest Roman Catholic church in North America.

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

The only remaining Cold War–era Minuteman II missile control center in Missouri.

This historic motel standing at the "crossroads of America" offers a radio in every room and was saved by local protesters.

This former mining town was named the most toxic town in America.

The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.

The United States Capitol's former columns still stand.

Before Nixon, "watergate" meant canals.

A small Richmond island dotted with the remnants of hundreds of years of history.

Decades after testing the polio vaccine on unwitting patients, this historic mental hospital sits in ruin.

An unrealized dream to wirelessly electrify the entire Earth.

An old abandoned mining town in The Adirondacks where Theodore Roosevelt first learned of the shooting of President William McKinley.

This WWII-era military installation once held an entire city within its walls - now, its walls are falling down.

The remnants of an early American attempt at missile defense.