One of the few remaining covered bridges in Lancaster County.

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

A huge railroad museum with over 100 pieces of rolling stock focusing on the railroad history of Pennsylvania.

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

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

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

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

The first of Lancaster's "rural cemeteries."

This iconic Lancaster everyman has been reading the same story since 1980.

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

When an ancient supervolcano erupted, some of Nebraska's prehistoric animals were forever preserved in ash.

An ornate Art Deco tile mosaic representing Nebraskan life, both modern and prehistoric.

This little gem of a museum is a hidden jewel filled with prehistoric treasures.

Four ionic columns from the Treasury Department building ended up in a park in Nebraska.

Ozymandias’ time-keeping temple.

One of its engravings is believed to be among the first representations of medical and surgical instruments.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

Other-worldly rock formations and ancient fossils abound in this unique stretch of Nebraska badlands.

This Great Plains museum pays tribute to both the prosperity and tragedy of the North American fur trade.

America's largest man-made forest was planted in an effort to bring back the past.

An experimental, automotive replica of Stonehenge.

This erect, phallic geological spire wasn't always named so domestically.

The home for all things Kool-Aid offers everything except a chance to actually enjoy the drink.

Nebraska’s longest-running summer theater is a musical tribute to cowboy culture.