By day this New Orleans square is for pedestrians, but by night it is a kingdom of kittens.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

The blinking light atop the iconic landmark has been sending secret messages for decades.

These two monoliths have stood at the entrance to the neighborhood since the days it was called "Hollywoodland."

There are lots of hands and feet stamped in the cement in front of Grauman’s Chinese Theater, but Mel left behind something extra.

Megachurch turned Catholic church comprised of 10,000 glass panes.

A second generation sun-powered marvel lights up the night.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

Yo, Adrian!

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

The house where John Wilkes Booth conspired with his co-conspirators.

Home to items never before seen by the public.

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

At 207 feet, one of the world's longest continuous escalators.

The world's longest known cave system.

Largest display of Wesleyana anywhere in the world.

Who needs fancy modern water slides when this giant North Carolina rock works just as well?