The tombstone of the founder of the lost town of Ogletown is now stuck inside a traffic median.

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.

These old doors are covered in the signatures of Rehoboth Beach artists dating back to the 1930s.

Museum houses an impressive display of the origin and artistry from the now-quaint invention's history.

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

In 1787, a group of delegates met at this very spot to drink, be merry, and ratify the Constitution of the United States.

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

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

World War II-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers.

This local gem houses the largest collection of pre-Raphaelite paintings outside of the U.K.

This weeping, 10-foot-tall sculpture was a maquette for a 9/11 memorial.

The historic home still shows the scars from a little run-in with the British in 1813.

A scenic fort on the harbor protected Philadelphia from an attack that never came.

A desiccated merman and a walrus penis bone are among the oddities in this eclectic collection of shipwreck treasures.

This collection of odd proofs of concept is like taking a walk through the imagination of a Victorian engineer.

What began as an art installation is now the private drinkhaüs for a brewery's employees.

A wrecked ship dating back to the American Revolution was only recently discovered off the Delaware coast.

A blend of art, antiquities, and Americana fill this museum, surrounded by whimsical, enchanting gardens.

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.

Springtime is go time for this repurposed shack and the fish it venerates.

It looks like a whale, it's part of Yale, and it's best-known by a nickname you can probably work out for yourself.

A humble air museum located in an original World War II aircraft factory.

An extra-wide chair built to accommodate the former president's big behind.