This abandoned horse racing track was an exercise in hubris from its inception.

Every year, festive decorations appear on this juniper tree located in the median strip of a busy highway.

This iconic 1958 tower welcomes air travelers to Tucson with neon-lit letters and architectural style.

A mass grave for victims of an airline disaster that led to much-needed safety improvements for commercial flights.

A stone pillar marking the location of the westernmost battle of the American Civil War only honors one side of the conflict.

Opinions differ as to whether this Arizona tree was actually used as a Wild West jail, but that hasn't stopped the town from capitalizing on it.

The first permanent memorial to a unique secret weapon of World War II.

Legend says train robbers stashed their gold within the depths of this unusual cave.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

The world's largest military aircraft cemetery.

One of the largest, oldest, darkest, quietest motel rooms in the world.

Take a monster truck tour around an ostrich farm in the middle of the desert.

A natural history wunderkammer in the middle of the desert.

The unusual burial monument of Arizona's first governor.

This abandoned bootleg attraction was built to cash in on the popularity of classic TV show, F Troop.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

The California capital city once stood 10 feet lower than it does today.

There are eight natural springs around town, each with a slightly different taste.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

A nostalgic bibliographic gem.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.