This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

So many migrating birds roost on the bridge, it has a special summer speed limit.

Down the road from where the Wright brothers lifted off is another flight tribute practically hidden from sight in the woods.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

Is this 47.7-mile stretch of highway the longest straight road in the United States?

Circus cemetery for all the “showmen under God’s big top.”

Memorializing an American tragedy of massive proportions.

Steepest flood safety railway in the entire world.

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

Yo, Adrian!

Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.

Dedicated to the explorer who opened Japan to the West.

Rhode Island's tallest building bears a resemblance to the "Daily Planet" building and has been empty for more than five years.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

Fuel your honky-tonking with this venue's unbeatable “Recession Special.”

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

This replica of the Greek structure is in the heart of Nashville.

These unusual rooms on wheels are holdovers from the 1960s.

The system of air guns are fired off remotely to scare any trespassing avians.

The romance of early commercial flight still fills this Art Deco destination.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

The controversial urban planner who designed Washington, D.C., was buried in Maryland, and can presently be found in Virginia.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

This lovely picnic spot featuring thunderous jet landings is an aircraft spotter’s dream.