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

The oldest continuously operating fish market in the United States.

This lonely waterfront memorial to the men of the Titanic was erected by the "Women of America."

Go take a picture with the inventor of the daguerreotype photographic process.

Perhaps the most scandalous statue of America's first president.

The 28,000-year-old specimen is remarkably intact.

An easily overlooked memorial to a Ukrainian famine-genocide that killed over 4 million people.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

A giant chess set, minus the psychedelic drug trip.

A statue commemorate Tommie Smith and John Carlos's brave protest at the 1968 Olympics, a watershed moment for civil rights.

A life-sized mammoth sculpture marks the spot where the remains of a Columbian mammoth were discovered in 2005.

The largest permanent Monopoly board makes one of the longest games even bigger.

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

The oldest house in the capital of Silicon Valley.

It is locally loved and ridiculed for literally looking like poop.

At night, this glittering musical tunnel draws skaters and photographers.

When this 160-year-old church was being built, a stonemason included a hidden homage to his late daughter.

Art Deco stylings conceal the true nature of this bridge.

Where the first "expert riders, willing to risk death daily" for the Pony Express were recruited.

I Street Bridge is the heaviest swinging center bridge in the United States.

This 15-story mural celebrates the 50th anniversary of the musician's iconic "At Folsom Prison" album.

An eccentric home stands out in an otherwise average neighborhood with mosaics, mini topiaries, and kinetic sculpture.