An important piece of history from mankind's journey to the moon sits in the lobby of a government science lab.

A geological mystery on Camelback Mountain.

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

Every Christmas, one Arizona city makes the most of its dry climate by creating an arid desert tannenbaum.

An incredible airplane graveyard sits outside this small museum dedicated to preserving aviation history.

Once a year, at exactly 11:11 a.m., this monument comes to life.

Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

An homage to everyone's favorite prehistoric cartoon family.

The eroded core of an ancient volcano is now accessible by a short hike.

A replica of the flagpole that gave a frontier town its name.

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

This memorial includes fragments from one of the greatest tragedies in United States history.

See massive fossils that are over 200 million years old in northeastern Arizona.

This sanguine boulevard was named after a deadly cowboy bar fight.

The handsome statue is a tribute to the post riders who traversed 52 miles of tough Arizona terrain.

You can spend the night as an honorary lighthouse keeper in this quaint, historic beacon.

This storybook New England home is actually a decommissioned lighthouse.

The only surviving fragment of the lost Narragansett Pier Casino.

This lighthouse was witness to the end of WWII hostilities and now collects creepy cairns.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

A planned settlement in Pennsylvania once housed the aristocratic refugees of the French Revolution.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

An abandoned stretch of highway, deteriorating next to the operational one.

This Art Deco service station has been providing tune-ups and turning heads for close to a century.