The one-time epicenter of American songwriting is now a little remembered Manhattan commercial block.

This wall on a street corner in Lower Manhattan has been a blank canvas for a rotation of renowned artists since the 1980s.

An art installation commemorates journalist Nellie Bly's undercover reporting inside a New York asylum.

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

Ice cream stand, snack bar, and time capsule of milk conveyance.

An enormous, inside-out glass globe built in 1935.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

The former site of an all-but-forgotten colonial landmark is now remembered by an often overlooked bas relief.

This historic Boston building has gone from personal estate to porn theater and back again.

The national park was once a plantation estate.

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

The oldest continuously operating fish market in the United States.

A heroic pigeon that, through a barrage of gunfire, delivered a message that saved over 100 lives in World War I.

A painfully obvious spy house sits right across the street from the Russian Embassy.

The colorful, smiling concrete silos of Vancouver.

The façade of this building looks like a bingo board, but it's really a giant clock by a famed graphic designer.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

This giant roadside goose has been hailing travelers into a small Ontario town for over 50 years.

"...I guess that was your accomplice in the wood chipper?"

The only road through the heart of Glacier National Park.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

One of few lasting examples of the brief octagon craze that developed into folly.