Scores of vintage street lamps shine along L.A.’s Miracle Mile.

You don't have to be an ambassador to dine like one.

A charming "tea atelier" hidden away in Greenpoint, Brooklyn.

Long buried under the 20th-century landscape, this lift lock of the Alexandria Canal is the lone remnant of an ambitious early American transportation project.

The headquarters of the Audubon Naturalist Society is a small slice of heaven for nature lovers.

An eerie, abandoned military base engulfed by nature and graffiti is now home to a local park.

This brick-lined pedestrian walkway was once a railway tunnel used during the Civil War.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

A crumbling Beaux Arts monument to the Bay Area's age of rail.

This sprawling farm was once a Cold War-era hideaway for the nation's top diplomats.

Herbert Hoover's "Brown House" rural presidential retreat was a PR disaster amid the start of the Great Depression.

A mammoth pair of Civil War artillery guns abandoned out in the forest.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

A priceless collection of the Nation's cryptologic history.

The oldest house in Washington, D.C. wasn't originally constructed in the nation's capital.

This grave marks the passing of a historic Jane Doe whose identity remains a mystery to this day.

The narrowest house in America is seven feet of pure spite.

A whopping 14,000 copper coins cover this miniature fighter jet.

Volcanic stone sentinels stand watch at a Korean Bell Garden in Virginia.

A lone historical marker off the highway and scattered debris are all that remain of this Cold War-era missile site.

A quiet nook at the top of a little-known hilltop park named after California's first poet laureate.

These elusive, isolated rodents evolved into a distinct, locally iconic subspecies.

The remains of a ruined mansion memorialize the 1906 earthquake.