The first of Lancaster's "rural cemeteries."

What looks like a simple quaint estate in rural Pennsylvania was in the 18th century home to a small monastic community.

How this Pine Barrens hill got its name is uncertain, but on a good day the view from the fire tower is crystal clear.

Rising out of a clearing in New Jersey's Pine Barrens is an Aztec-inspired monument to the "Lindbergh of Mexico."

This historic iron-working village is now a ghost town so immaculate that it looks as though it was recently built.

Step inside Lucy, the world's largest "elephant."

A preserved factory in the "Home of the Carrousel" is now a museum dedicated to the classic wooden ride.

Behold the rickety wooden glory of the world's oldest operating roller coaster.

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

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

This massive airship factory is so large that it has its own indoor weather.

Memorializing an American tragedy of massive proportions.

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

A living maritime paradox still floats in the same lake where it was built and resurrected... or was it?

Where the oil industry began.

The bridge's highly-contested plaque (once again) honors Confederate President Jefferson Davis.

A double agent hid information for the Soviet Union beneath this bridge for more than 20 years.

This pre-Revolutionary War grist mill ground corn and flour for soldiers in seven American wars.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

The only statue of its kind to commemorate Washington's beginnings as an officer of the British Colonial Militia.

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.

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

A local prank turned town icon.

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.