A secret fresh water spring for animals and humans alike hidden along the most famous road in the United States.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

A room filled with frescos that make it seem like the walls are crumbling down while giants die in despair.

The largest cemetery for enslaved people in Loudoun County was almost lost to history, if not for the research of a minister.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

One of the oldest living oak trees in the Southeast.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

Many generations of travelers have passed through the steep, smooth walls of this canyon.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

The "Bridge Over the Atlantic" lets you cross the waterway in mere seconds.

The oldest stone house in Paris was built by its most famous alchemist.

The red brick house where the father of rock 'n' roll wrote some of his classic hits.

A New Hampshire grave with a grudge.