These trees are living witnesses to events that inspired poet Walt Whitman’s service during the American Civil War.

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

Dr Barnes' $25 billion private collection of art and arboretum.

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.

A layered tribute to the work of mosaicist Isaiah Zagar.

In the early 1800s, surgery was also a show.

One of Philadelphia's largest murals resides hidden under this bridge.

This unique structure is the only one of its kind in Virginia.

Bizarre Cavern.

Built by the patriotic residents of Boonsboro in a single day.

A striking memorial to the 21 lives lost in an explosion at the Washington Arsenal

The location where the American Revolution ended.

The mouldering manses of wealthy colonials still pock the streets of a Curaçao neighborhood.

The floor of the oldest surviving synagogue in the Americas is entirely covered in sand.

A monumental statue of RCA's mascot now sits atop a historical society roof after a life of moving around.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

This simple convenience store sits on the location where the Ouija board was named—and has a plaque to prove it.

The garage at the childhood home of Steve Jobs was a hangout for the founders of Apple, even if they never built computers there.

A giant can of fruit cocktail is all that remains of what was once the world's largest cannery.

This historic mansion was built as a symbol of love between a husband and wife.

A journey along this trail means indulging in a slice of nostalgia.

The Virginia home of one of the signers of the Declaration of Independence is being preserved with a unique glass facade.

Both the building and blades of this reconstructed 19th-century windmill can turn in a breeze.

A statue of an astronomer gazes at the sky as a tribute to Caroline Herschel.