This memorial plaque remembers a strangely shallow maritime disaster known as "Chicago's Titanic."

One of the largest pieces of scientific equipment ever carried on a NASA space shuttle sits in a Chicago alley.

This modest post office sits on the site of H.H. Holmes' famous murder castle.

The world's only known button museum.

The highest point in Virginia can only be reached by passing through ponies and flowers.

"Not too many people can say they've had a nuclear bomb dropped on them, not too many would want to." — Walter Gregg.

This roadside attraction has been serving out its fair share of hearty folklore and chaos since 1858.

This bright yellow relic is the final survivor of a short burst of seashell-shaped petrol pumps.

A historic covered bridge, only one of two remaining in North Carolina.

This historic museum is home to a rare Confederate Chester Gun.

A trove of century-old litho stones from the Puck Building's printing days were discovered behind a cellar wall, and are now hanging in the store.

Most prolific publishing house in the 1600s open to the public.

Beautiful stained glass depictions of the history of human flight fill this surprising chapel.

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

The final resting place of many of New Jersey's most famous residents, including U.S. history's most in-vogue antagonist, Aaron Burr.

The boulder on which Alexander Hamilton laid his head as he died can still be visited on the New Jersey coast.

The skeletal white beams stand as a monument to religious dissent.

This claimant to the title of "smallest church in the 48 states" doubles as an equally tiny, quasi-post office.

The flower-shaped temple in Virginia aims to transcend the boundaries of the world’s religions.

Once America's tallest structure, now a Baltimore landmark.

The trials and tribulations of marking Poe's grave.

Display that gathers the basic elements of the universe in one convenient location.

This library and museum is dedicated to the life and literature of the Indianapolis native author.

The pop art icon's gravesite is broadcast 24 hours a day on his museum's website.