This ancient Hawaiian henge may have been an early star chart.

You could be standing at the site of one of D.C.'s most fatal tragedies and not even know it.

The story behind this beloved toy—named for Theodore Roosevelt and owned by his grandson—is more complicated than you might guess.

Home to items never before seen by the public.

The United States Capitol's former columns still stand.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

A collection of artifacts from two worldwide industries that called Endicott, NY home.

This picturesque cottage was the site of Ulysses S. Grant’s final and perhaps most important campaign.

All that remains of one of the Civil War's more deadly POW camps is a simple flagstone.

Learn about the last river many crossed to find freedom from slavery in the United States.

At this farm in upstate New York, the former president plotted his reelection campaign.

It wouldn't be long after purchasing this farm, Brown would lead his siege on Harper's Ferry.

One of the deadliest American air disasters is nearly forgotten in Brooklyn.

The summit Roosevelt conquered before he descended to become The Chief.

The final resting place for the famed creator and narrator of "The Twilight Zone."

The site of William McKinley's tragic assassination is only marked by an underwhelming boulder.

The first "Hall of Fame" in America was designed by legendary Gilded Age architect Stanford White for what was then the NYU uptown campus.

This New York holdover was built to provide housing for shopgirls and still does not allow men above the lobby.

Play heads or tails with thousands of different coins.

The wooden octagon in which Huckleberry Finn and A Connecticut Yankee were born can still be visited in upstate New York.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

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

A curious friendship between two inanimate ladies.

There must be a pun in this haystack somewhere...