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

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

Illegal drag racing two stories beneath Chicago’s streets.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This awkward aquarium sculpture is one of the strangest statues in Chicago.

Home to Hollywood history and a very special salt crystal.

The grandson of a Kiowa chief created what has become the iconic symbol of a city on the Plains.

Standing at 21-feet tall, this space cowboy adds to the legacy of Route 66's muffler men.

One of the best examples of Art Deco architecture in the United States.

The fifth tallest statue in the United States is a shirtless monument to the oil worker.

The future of roadside attractions is this sci-fi soda mecca that is home to a 66-foot tall neon pop bottle.

This unusually circular centenarian barn became a Route 66 icon.

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

This simple frog painting created by musician Daniel Johnston embodies the spirit of Austin.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

A 131-year-old wunderkammer of Texas history.

An ivy-covered arch bridge dedicated to Tejano music singer and legend Rosita Fernandez.

An eatery for UFO seekers on the Extraterrestrial Highway.

This sign designates the road that leads to the infamous Area 51.

Mysterious meeting place for UFO hunters near Area 51.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Thousands of pieces of art have been carved into the rock at the site of an ancient volcanic eruption.