This two-hour special examines controversial new theories about the man who ruled the world's mightiest Empire with sadistic brutality.

This documentary looks inside the scandalous private lives of the people who ruled the vast Roman Empire.

In this one-hour, recreation-driven documentary, we focus on law and order in ancient Rome. As we recount Roman true crime stories, we also explore the creation and function of various Roman law enforcement agencies, including the Vigiles.

For more than 500 years, Rome was the most powerful and advanced civilization the world had ever known, ruled by visionaries and tyrants whose accomplishments ranged from awe-inspiring to deplorable. One characteristic linked them all--ambition--and the thirst for power that all Roman emperors shared fueled an unprecedented mastery of engineering and labor. This documentary special chronicles the spectacular and sordid history of the Roman Empire from the rise of Julius Caesar in 55 BC to its eventual fall around 537 AD, detailing the remarkable engineering feats that set Rome apart from the rest of the ancient world. Featuring extensive state-of-the-art CGI animation, and exclusive never-before-seen footage shot on a diving expedition in the water channels underneath the Colosseum.

One thousand years ago in the northern region of central India, the Hindu Kings built their capital city, Khajuraho. Eighty-five stunning temples were built, twenty of which remain today.

An examination of the frightening and even deadly substances that people have used to alter their consciousness over the centuries.

This two-hour special examines controversial new theories about the man who ruled the world's mightiest Empire with sadistic brutality.

This documentary looks inside the scandalous private lives of the people who ruled the vast Roman Empire.

In this one-hour, recreation-driven documentary, we focus on law and order in ancient Rome. As we recount Roman true crime stories, we also explore the creation and function of various Roman law enforcement agencies, including the Vigiles.

For more than 500 years, Rome was the most powerful and advanced civilization the world had ever known, ruled by visionaries and tyrants whose accomplishments ranged from awe-inspiring to deplorable. One characteristic linked them all--ambition--and the thirst for power that all Roman emperors shared fueled an unprecedented mastery of engineering and labor. This documentary special chronicles the spectacular and sordid history of the Roman Empire from the rise of Julius Caesar in 55 BC to its eventual fall around 537 AD, detailing the remarkable engineering feats that set Rome apart from the rest of the ancient world. Featuring extensive state-of-the-art CGI animation, and exclusive never-before-seen footage shot on a diving expedition in the water channels underneath the Colosseum.

One thousand years ago in the northern region of central India, the Hindu Kings built their capital city, Khajuraho. Eighty-five stunning temples were built, twenty of which remain today.

An examination of the frightening and even deadly substances that people have used to alter their consciousness over the centuries.

This two-hour special examines controversial new theories about the man who ruled the world's mightiest Empire with sadistic brutality.

This documentary looks inside the scandalous private lives of the people who ruled the vast Roman Empire.

In this one-hour, recreation-driven documentary, we focus on law and order in ancient Rome. As we recount Roman true crime stories, we also explore the creation and function of various Roman law enforcement agencies, including the Vigiles.

For more than 500 years, Rome was the most powerful and advanced civilization the world had ever known, ruled by visionaries and tyrants whose accomplishments ranged from awe-inspiring to deplorable. One characteristic linked them all--ambition--and the thirst for power that all Roman emperors shared fueled an unprecedented mastery of engineering and labor. This documentary special chronicles the spectacular and sordid history of the Roman Empire from the rise of Julius Caesar in 55 BC to its eventual fall around 537 AD, detailing the remarkable engineering feats that set Rome apart from the rest of the ancient world. Featuring extensive state-of-the-art CGI animation, and exclusive never-before-seen footage shot on a diving expedition in the water channels underneath the Colosseum.

One thousand years ago in the northern region of central India, the Hindu Kings built their capital city, Khajuraho. Eighty-five stunning temples were built, twenty of which remain today.

An examination of the frightening and even deadly substances that people have used to alter their consciousness over the centuries.