This massive railroad spike celebrates the 1939 premiere of the movie “Union Pacific.”

Roaming bison and a spectacular view at the highest point in Nebraska.

An idle pastime becomes a record holder in Boys Town, Nebraska.

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

Locals call this magical moss-covered walkway the "Emerald Path."

For decades, it has disappeared and reappeared as water levels rise and fall.

A shady solar power system that couldn't hold up to the harsh desert conditions.

A museum in rural Utah documents the history of the Japanese Americans who were forcibly relocated there.

Dig for your own trilobites in this goldmine of invertebrates.

Instead of using billboards, some people here relay their messages on the side of a mountain.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

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

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

Town full of spiritualists, some of whom are mediums, is still in full swing after 130 years.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

"Where the ducks walk on fish."

Where the oil industry began.

The site of America's first commercial oil well essentially disappeared after the town went bust.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

The oldest landmark of Toronto is a testament to shifting sands.

This elegant Colombian fortress was one of the torture headquarters for the Spanish Inquisition.

The colonial city's social history is reflected in its fanciful door knockers.

The second oldest continuously operating bar in Louisiana.

These unusual houses look like giant boats that washed ashore on a residential street.