Take a trip to the past aboard a 1920s railcar or open flatcar for a scenic ride through Maryland farm country.

Long before the Battle of Gettysburg occurred, dinosaurs roamed the area and left their footprints on this bridge.

An almost life-sized elephant named Ms. Ellie greets visitors at this jumbo-themed museum.

Built by the patriotic residents of Boonsboro in a single day.

First built around 1848, this bridge was destroyed by arson, but original timbers are included in the replacement.

The smallest covered bridge in Maryland.

The world’s first stop-motion film was created on the racetrack outside this building.

A sudden forest of traditional Papua New Guinean art works is hidden in a corner of Stanford University.

An archive of nearly every day of Buckminster Fuller's life.

A humble garage, world-famous for being the epicenter of a technology revolution.

Apple memorabilia in an undisclosed warehouse, hidden for undisclosed reasons.

An old-timey medicine shop that once served Chinese laborers during the Gold Rush is still open for business to this day.

A plaque outside the San Jose airport commemorates the insect's arrival to the West Coast.

Subterranean house made out of a grain silo, located in the Santa Cruz Mountains.

This giant shopping mall still holds signs of its automotive past.

Where a railroad loops under or over itself to rise or drop more than 70 feet in a short distance.

The precious-metals strikes dating back to the 1860s are now mostly inactive, but this area has become the United States' only domestic source of lithium.

Thousands of migrating monarchs overwinter clustered amongst the eucalyptus trees.

This tiny cluster of abandoned buildings looks like the future of the ghost town - today!

The longest burning light bulb in the world.

This cabin from the 1850s is one of the first structures built by Chinese immigrants in California.

The oldest house in the capital of Silicon Valley.

This little valley along Highway 1 is engulfed by thousands of lilies during the spring season.

It took years to decode its mysterious messages.