This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

The Midwestern United States' tribute to Michelangelo is a foam statue sprayed with gaudy gold paint.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

The oldest farmer's market in America is so ancient it was approved by the King of England.

An outlandish shoe shaped house built by an eccentric millionaire.

Georges Seurat’s pointillist masterpiece has been recreated in Ohio in topiary form.

Just outside the Ohio Supreme Court sits a testament to justice.

An obsolete, vanishing traffic device warns Cincinnati drivers away from middle-of-the-road obstructions.

This natural hill rose another 130 feet from the debris and rubble added after World War II.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

Four hundred granite steps were built into this massive rock by the National Park Service.

The tragedy of the Japanese internment camps is remembered here by a stark "Soul Consoling Tower."

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

This rustic old building is said to be the most photographed barn in America.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Home to the deepest rift anywhere on Earth.

This impressive tunnel was dug entirely by hand over the course of 36 years.

Where a railroad loops under or over itself to rise or drop more than 70 feet in a short distance.

California's own majestic geyser is powered by a subterranean volcano.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Oregon's unexpected high desert, displaying layers of time in a colorful show.