A playground inspired by differential calculus dangles from the ceiling of the Liberty Science Center.

On the Hudson resides one of the largest clocks in the world.

Don't get it twisted: This is the oldest pretzel bakery in the United States.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

Beyond the usual stories that attend old prisons, this one has deep bloody undercurrents.

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

The souvenir got the company’s founder out of a pretty pickle at the World’s Fair.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

Walk into the 19th century without leaving Brooklyn.

A one-ton statue of Steve Rogers beautifies the entry to a Brooklyn Bed, Bath & Beyond.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

A way to take your secrets to someone else's grave.

A curious friendship between two inanimate ladies.

Detailed facade of a brownstone in Boerum Hill.

A popular European tradition makes its way to the states on one of America's most famous bridges.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

Jimi Hendrix's legendary recording studio in Greenwich Village.

Once a popular watering hole among longshoremen and shipyard workers, this neighborhood treasure spans more than 100 years of Red Hook history.

Avoid gangster interaction while window-shopping.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

The Hudson River School comes alive at this palatial estate.

A unique sculpture park that specializes in the huge and bizarre.

Leaf through over 30,000 artists' sketchbooks in what may be the world's largest collection of doodles