This outpost of America's most popular fast-food restaurant is housed inside a palatial mansion.

This museum-within-a-museum pays tribute to "The World's Most Experienced Airline."

The site of a tragic massacre that spawned a multimedia franchise.

Step inside Lucy, the world's largest "elephant."

The Dover International Speedway is home to a towering, concrete-skinned, racecar-hungry behemoth.

A uniquely lettered street sign marks the corner where the iconic word game was invented.

A town trapped in time - 1958 to be exact.

The highest natural point in New York City and all of the Atlantic coastal plain.

In the middle of suburban Staten Island, a nearly 150-year-old bakery is preserving the art of a disappearing New York treat.

The final resting place of some of Staten Island's earliest settlers and their descendants.

Final resting place of two dozen New York City harbor ships.

This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

Family-run for more than a century, this pizzeria makes a unique mustard pie.

These 20-foot sculptures will help guide you from the local train station to the local sculpture garden.

A unique sculpture park that specializes in the huge and bizarre.

Step into Monet's world at this fine-dining restaurant in the middle of a New Jersey sculpture park.

North America's oldest quarantine facility was built in response to Philadelphia's 1793 yellow fever outbreak.

Surrounded by industrial sprawl, a small monument marks the site of William Penn's first landing in Pennsylvania.

The highest point in Delaware is located under a trailer so this marker across the street will have to do.

This splendid Versailles-inspired mansion has the largest French-style formal gardens in North America.

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

One of the oldest surviving Swedish-American homes in the United States.

A drab two-story office space in Delaware is a hidden tax haven for Hillary Clinton, Donald Trump, and over half the Fortune 500 companies.

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.