A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.

The national park was once a plantation estate.

Illegal drag racing two stories beneath Chicago’s streets.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

This church built atop a gas station promises to "equip you for the next stage in your life’s journey."

A celebrity from the late Cretaceous period.

The span is crooked and made from two older recycled bridges.

Lions and tigers and leopards, servals, pumas, bobcats, lynxes, and ocelots... oh my!

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

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

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

Rumor has it the hot dog stand was targeted by two Russian nuclear missiles.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

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

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

The "Seinfeld" diner.

D.C.'s first central library was born out of a chance encounter with the philanthropist whose name it bears.

This working class sculpture pounds his hammer all the livelong day.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

Need a hardcopy of the 50-title Code of Federal Regulations? This is the place.

The most accurate timepiece in the world.