TV Guide History Saturday

All over the world stand ancient structures so massive, precise, and baffling that they seem impossible for not just their time, but ours as well.

Exploring the concept of automated assistants throughout history, from ancient golems to modern time-saving contrivances.

Exploring theories that claim Earth's oceans are full of monsters, magical beings and more.

These are the chilling encounters of people who trespassed into the domain of the unexplained... and paid the price.

While investigating a potentially ancient marker stone on Oak Island, the team makes stunning new discoveries.

After a new Bobby Dazzler is unearthed on Lot 5, the Oak Island team makes a discovery with possible religious implications.

After verifying a recent find on Lot 5 to be a sacred, religious artifact, the team drills through a surprising discovery deep in the Money Pit area.

When the team finds an artifact on Lot 8 that may date to medieval times, it leads them to another, massive discovery.

As the team makes a potentially key discovery beneath a boulder on Lot 8, new clues arise that could identify who was behind the Oak Island mystery.

These are the chilling encounters of people who trespassed into the domain of the unexplained... and paid the price.

From a demonic entity in Bagdad Iraq, a haunted house in England, a Bigfoot in Washington State, a UFO over the skies of Kentucky and a Djinn in Iraq.

Throughout the years many cultures have attached superstitions and myths to the real world, often in the form of cursed items and places.

Mankind has been intrigued by monsters that rely on human blood for sustenance, which leaves researchers wondering if the myths derive from real-life creatures.

Predators are dangerous, but some struggle to explain certain attacks on humans and posit that there may be another reason for these attacks.

What happens after death has been a topic of discussion among religions and philosophies across the world as one of life's greatest mysteries.

A look at how "lost cities" come about and what factors lead to abandonment, as well as what these instances say about human nature.

Researchers attempt to better understand why certain rocks and stones have inspired people to treat them with such high levels of reverence or trepidation.

Exploring theories about magical abilities and powers, including clairvoyance and more.

Since the beginning of history, assassins have executed leaders, triggered world wars, and unleashed total chaos with one targeted strike.

Exploring scientific pioneers throughout history whose experiments and inventions pushed the boundaries of imagination, morals, and human limits.

Exploring supernatural claims surrounding America's past Presidents.

Exploring theories about magical abilities and powers, including clairvoyance and more.

Since the beginning of history, assassins have executed leaders, triggered world wars, and unleashed total chaos with one targeted strike.

Exploring scientific pioneers throughout history whose experiments and inventions pushed the boundaries of imagination, morals, and human limits.

Exploring supernatural claims surrounding America's past Presidents.