A tree bears footwear on the loneliest road in America.

A beautiful geyser under environmental threat.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

Tucked in the back of this amazing antique store is an important piece of medical history.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Washington's iconic carousel has a nice piece of Civil Rights history.

This lovely pocket park is one of the most under appreciated in D.C.

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

The "lovely red Vega" of the legendary record-settling pilot.

There's a crumbling old mansion inside the Smithsonian National Zoo.

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

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

Home to items never before seen by the public.

An overlooked memorial honoring the local Washington residents who died in World War I.

On the Fourth of July this area will transform into a Pompeii-like storm of falling embers and ash.

The sculptor was instructed to add “stallion attributes” to the general's bronze mare.

The rogue roots are gradually consuming some of the historic marble grave markers.

There’s a hidden military meme engraved on the World War II Memorial.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

An old whaling station now serves to give the public a look at the commercial whaling industry, no longer a part of Monterey's economy.

Everything you always wanted to know about borates is here.

One poet's handmade, anachronistic home.

It should come as no surprise that the world's largest artichoke lies in the town that calls itself the "Artichoke Center of the World."