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

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

A bronze of the man in all his sinewy glory celebrates his longtime connection to the Ohio city.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

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.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

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

The home made famous by the 1983 holiday classic is now a perfectly preserved shrine to the movie.

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

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

A small storefront museum explores the history and myth of West Virginia's famous urban legend.

Outsider art meets paleontology at this roadside reptile repository.

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

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

Cryptic messages embedded in the New York City sidewalk.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

The "Seinfeld" diner.

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

Yo, Adrian!

The oldest surviving botanic garden in the United States.

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

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

Quite simply the largest tree in the world (by volume).

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.