An office built to look like a giant basket.

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.

The Hudson River School comes alive at this palatial estate.

A collection of unique outdoor sculptures surounded by the beauty of nature.

The birthplace of America's favorite fruit-flavored mystery dessert.

Town full of spiritualists, some of whom are mediums, is still in full swing after 130 years.

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

This Delaware River bridge is emblazoned with a catty slogan from a more prosperous time.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

This dramatic rail curve was once the target of a failed Nazi attack.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

This elaborate towering structure was once famed for its revolutionary height.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

There aren't too many operational funiculars around, but Pittsburgh has two!

The oldest farmer's market in America is so ancient it was approved by the King of England.

The oldest surviving botanic garden in the United States.

The first American department store, and home to the largest operating musical instrument in the world.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

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

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

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

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.