Look closely and you’ll notice that the color changes a third of the way up the tower.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

Daredevil repair workers can worm their way out the access hatch, loop ropes over the apex and rappel down the monument.

The monument's pointy aluminum tip has been melted down by repeated lightning strikes.

Just outside the Naval Academy, Hell Point is a historical marker that could easily be the point where failed students wait for the bus.

This statue honors the author's groundbreaking family story.

The hidden ruins of a mill that is linked to an attempt to assassinate the vice president of the United States.

This abandoned Victorian-style house was built in 1884.

Elvis's own personal tropical hideaway.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

A toxic ghost town sitting atop a massive coal fire.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

Surrounded by traditional homes, this Tolkien-esque dwelling stands out on a quiet street in suburban Maryland.

FDR's Art Deco hospital tower was hopelessly inefficient.

A 131-year-old wunderkammer of Texas history.

This church on a Tohono O'Odham reservation has stood since 1797.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

The oldest continuously occupied public building in the United States.

"I did this all while you were watching TV."

This is one really big nut.

Home of the International Space Hall of Fame.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

This quirky hot springs town known to locals as "T or C" was named after a radio show.