Including their very existence.

There are strong arguments both ways.

The illustrations and text were hiding in his files.

The wine still tastes pretty decent.

Walking tour, anyone?

Slashed sleeves, frizzed hair, or a gold hatband could land you in court.

A dentist's reservation card was one of the best clues inside.

It looks a lot like a bomb.

Author Jay Leibold shares the branching maps he created while writing his first CYOA stories.

They were giants for their time.

It was right near Thomas Jefferson's bedroom.

It was almost destroyed along with the building.

A new, giant iceberg could be born any day now.

The monument at Avebury still has secrets to be uncovered.

It spent 35 years at sea.

British surveyors and Native American leaders drew a border along the Appalachians. Then the Revolutionary War happened.

The TSA screened this surprisingly large specimen.

Following an ancient Irish practice, one man made his own bog butter.

And "a considerable element of boisterous good humor."

Thousands of pieces of pottery were hiding under one town's Memorial Hall.

A fascinating case study from the Thirty Years' War.

This new discovery goes against previous ideas of Viking bathroom culture.

The site where it was found is said to be haunted, too.

In the 1920s, USSR scientists investigated “biological radio communications,” more popularly known as telepathy.