This memorial in the Adirondack wilderness honors the accidental death of a Scottish entrepreneur.

This 19th-century Hamptons windmill was once home to modernist painter Agnes Pelton.

It wouldn't be long after purchasing this farm, Brown would lead his siege on Harper's Ferry.

Dozens of houses in the Adirondack Mountains are reminders of a literal "cottage industry" to cure people of a deadly disease.

Teddy Roosevelt’s famous “midnight ride to the presidency" started at this small lake high up in the Adirondacks.

The summit Roosevelt conquered before he descended to become The Chief.

A hamlet full of permanent Christmas spirit holds one of the earliest theme parks in the United States.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

A mysterious air force base built to resemble a Long Island fishing village.

The first piece of public art dedicated to LGBT rights.

This sandstone gorge in New York State's Adirondack Mountains is home to waterfalls, flumes, and more.

An old abandoned mining town in The Adirondacks where Theodore Roosevelt first learned of the shooting of President William McKinley.

The "Seinfeld" diner.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

A Victorian Fort built into the chalky cliffs that overlook the English Channel.

The rotting skeleton of a shoreside fun fair that was destroyed by fire and storms still haunts the Brighton ocean view.

One of England's most famous churches hides a pair of little known architectural treasures.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

Famously misunderstood wonder of the ancient world

A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.

The platform atop this verdant volcano was built with the help of a royal elephant.