Hidden behind a gate in Greenwich Village is a little farmhouse that once served as the writing studio of a bestselling author.

The last remaining 19th-century tenement from Boston's old West End neighborhood.

This ominously named New Jersey street seems to be attracting over-the-top legends of its own making.

A crumbling staircase in upper Manhattan is all that remains of one of the most important sites in sports history.

Montreal's colorful subway station shows its support of the local LGBT+ community.

A memorial to the 1913 tragedy that helped protect the workers of the future.

Hike deep into the woods to explore this Gilded Age masterpiece.

A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.

A monument commemorating the discoverer of radio astronomy.

A small burial ground honoring Native American veterans of the Revolutionary War.

One of the oldest cemeteries in Vermont is the final resting place of soldiers, politicians, and a famous author.

This covered bridge was used by both Union and Confederate troops during the Battle of Gettysburg in 1863.

The only United States mine for magnesium carbonate has been operating continuously since the 1930s.

Original factory of John G. Borden who started what we know today known as Borden Dairy.

The only boathouse Frank Lloyd Wright ever designed was also the only unbuilt structure in his famous Wasmuth Portfolio, until 2007.

One woman's Viking Castle on Lake Tahoe.

California's longest-running tourist attraction is a stump.

A unique museum where guests can rent and operate a locomotive.

The original span of a high bridge across the deep Crooked River Gorge has been preserved for pedestrian use.

In the middle of a busy airport, a statue honoring the astronaut who told Houston that Apollo 13 had a problem.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

After decades of neglect, a brutalist icon is getting new life as an eco-friendly hotel.

This small-town pizzeria won the Hollywood lottery.

This Civil War monument was designed by an eccentric architect and Gettysburg veteran.