A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

A field of nothing but boulders which resembles a giant's gravel driveway.

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

A massive sustainable farm designed by the mastermind behind Central Park.

A New England curiosity cabinet, one hundred years on.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

The sweetest graveyard in the world is filled with headstones for dearly de-pinted ice cream flavors.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

Yo, Adrian!

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

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 remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

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

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

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

This might just be the TARDIS of bookstores.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

The world’s first penitentiary, meant to be humane, drove men insane.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

An icon among Florida's pre-Disney tourist attractions, just west of Orlando.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.