"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

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

The only presidential monument to display a late POTUS's actual casket.

This massive airship factory is so large that it has its own indoor weather.

The site of Neil Armstrong's first flight is marked by a full on replica of the moon landers.

There aren't too many operational funiculars around, but Pittsburgh has two!

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

The largest source of fossilized insects anywhere.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Settled by the Church of Jesus Christ of Latter-day Saints in 1859, this abandoned frontier town has appeared in several films.

A mysterious spirit totem at the edge of Navajo lands.

Ancient pueblos built into the base of a natural canyon wall.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

This freshwater spring fills with 10,000 gallons of water per minute.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

Deep scars on the earth left by the Ice Age.

The concrete shell of an industry giant remains as a playground for graffiti artists, auto scrappers, and paintball warriors.

A grandiose title could not save this mercantile community from obscurity.

The angel of death appears to weep black tears at this grave marker.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

The 25th President's marble casket can be visited in this classical Ohio tomb.