This special offers a rare look inside the grandest building in our nation's history. For the first time, Americans will get a glimpse behind those imposing walls as we reveal what life is really like for those who've lived in the White House.

Piecing together information from secret sources and a two-hundred-year evolution of the White House, investigative journalists and government insiders weigh in on the mystery of an unusual white box and a top-secret construction project dubbed the "Big Dig" that took place outside of the West Wing from 2007-2012. Using little-known images, previously classified material and detailed graphics, the search for truth reveals not only what secrets might lay below the White House, but how their existence could affect democracy as we know it.

The White House might be the most recognizable home in the entire world. But as a Washington, D.C. native, Henry Rollins knows there's far more to 1600 Pennsylvania Avenue than meets the eye. From dissecting the shape of the Oval Office to uncovering why a brothel once operated on White House grounds, Henry uncovers the most thought-provoking details about the Executive Mansion.

They are an elite force of brave men and women who put their lives on the line. Their mission: to guard the most powerful person in the world. But just who are these American heroes? And what secrets are they protecting? This episode goes inside one of the most top-secret law enforcement agencies in the United States. But is there more to the Secret Service than just protecting America's greatest asset? And do recent scandals signify a growing problem within the ranks? Current director of the U.S. Secret Service, Julia Pierson, discusses the history of the agency and the growing threats against the office of the President. Former U.S. Secret Service special agent, Dan Bongino, reveals the grueling agency selection process and the psychology involved in assessing ever-present dangers. And Political Journalist, Marc Ambinder, examines the scandal in Cartagena, Columbia and how it has impacted the culture within the Secret Service.

Is there a top tier of presidential toughness that sets some of our commanders in chief apart from all the rest? Everyday objects reveal the real stories behind some of the most amazing presidential feats, from the bottle-thick eyeglasses that turned one man into an unlikely war hero, to the wooden cane that took down a would-be assassin, to the coconut that saved Camelot.

In this episode, we look at the ways that American English has been transformed by American presidents, by the language of sex and romance, and by good and bad manners. We'll also explore how easy it is to insult people of different groups without even realizing it. Did you know who invented the phrase Founding Fathers, and what the Founding Fathers originally called themselves? Or how American presidents popularized terms like "three martini lunch," "lunatic fringe" and "keep the ball rolling"? When it comes to insults, did you know that the cheer "hip hip hurray" was originally anti-Semitic, "hooligan" was anti-Irish, and the phrase "in cahoots" was anti-French? When it comes to sex, how did a diet of meat give us the word "mating," why do young men "sow their wild oats," and why is the word "hysterical" an insult to women? And when it comes to manners, we'll explore the strange roots of words like "posh," "snob," "stuck up" and even "hello" and "goodbye.

The U.S. Bullion Depository, better known as Fort Knox, is the home of the United States Army and one of the world's most top secret fortresses. Hidden deep inside the vault is an estimated $73 billion dollars in gold. Almost all information about it is classified. Through interviews with eyewitnesses, rare photos, and rarely seen films, we will construct a picture of what the building might look like. Hear testimony of those journalists and congressmen who were among the select few invited inside in 1974. Discover the history and secrets behind the Army's tank warfare and the classified military technologies it will use to fight the wars of the future.

This special offers a rare look inside the grandest building in our nation's history. For the first time, Americans will get a glimpse behind those imposing walls as we reveal what life is really like for those who've lived in the White House.

Piecing together information from secret sources and a two-hundred-year evolution of the White House, investigative journalists and government insiders weigh in on the mystery of an unusual white box and a top-secret construction project dubbed the "Big Dig" that took place outside of the West Wing from 2007-2012. Using little-known images, previously classified material and detailed graphics, the search for truth reveals not only what secrets might lay below the White House, but how their existence could affect democracy as we know it.

The White House might be the most recognizable home in the entire world. But as a Washington, D.C. native, Henry Rollins knows there's far more to 1600 Pennsylvania Avenue than meets the eye. From dissecting the shape of the Oval Office to uncovering why a brothel once operated on White House grounds, Henry uncovers the most thought-provoking details about the Executive Mansion.

They are an elite force of brave men and women who put their lives on the line. Their mission: to guard the most powerful person in the world. But just who are these American heroes? And what secrets are they protecting? This episode goes inside one of the most top-secret law enforcement agencies in the United States. But is there more to the Secret Service than just protecting America's greatest asset? And do recent scandals signify a growing problem within the ranks? Current director of the U.S. Secret Service, Julia Pierson, discusses the history of the agency and the growing threats against the office of the President. Former U.S. Secret Service special agent, Dan Bongino, reveals the grueling agency selection process and the psychology involved in assessing ever-present dangers. And Political Journalist, Marc Ambinder, examines the scandal in Cartagena, Columbia and how it has impacted the culture within the Secret Service.

Is there a top tier of presidential toughness that sets some of our commanders in chief apart from all the rest? Everyday objects reveal the real stories behind some of the most amazing presidential feats, from the bottle-thick eyeglasses that turned one man into an unlikely war hero, to the wooden cane that took down a would-be assassin, to the coconut that saved Camelot.

In this episode, we look at the ways that American English has been transformed by American presidents, by the language of sex and romance, and by good and bad manners. We'll also explore how easy it is to insult people of different groups without even realizing it. Did you know who invented the phrase Founding Fathers, and what the Founding Fathers originally called themselves? Or how American presidents popularized terms like "three martini lunch," "lunatic fringe" and "keep the ball rolling"? When it comes to insults, did you know that the cheer "hip hip hurray" was originally anti-Semitic, "hooligan" was anti-Irish, and the phrase "in cahoots" was anti-French? When it comes to sex, how did a diet of meat give us the word "mating," why do young men "sow their wild oats," and why is the word "hysterical" an insult to women? And when it comes to manners, we'll explore the strange roots of words like "posh," "snob," "stuck up" and even "hello" and "goodbye.

The U.S. Bullion Depository, better known as Fort Knox, is the home of the United States Army and one of the world's most top secret fortresses. Hidden deep inside the vault is an estimated $73 billion dollars in gold. Almost all information about it is classified. Through interviews with eyewitnesses, rare photos, and rarely seen films, we will construct a picture of what the building might look like. Hear testimony of those journalists and congressmen who were among the select few invited inside in 1974. Discover the history and secrets behind the Army's tank warfare and the classified military technologies it will use to fight the wars of the future.

This special offers a rare look inside the grandest building in our nation's history. For the first time, Americans will get a glimpse behind those imposing walls as we reveal what life is really like for those who've lived in the White House.

Piecing together information from secret sources and a two-hundred-year evolution of the White House, investigative journalists and government insiders weigh in on the mystery of an unusual white box and a top-secret construction project dubbed the "Big Dig" that took place outside of the West Wing from 2007-2012. Using little-known images, previously classified material and detailed graphics, the search for truth reveals not only what secrets might lay below the White House, but how their existence could affect democracy as we know it.

The White House might be the most recognizable home in the entire world. But as a Washington, D.C. native, Henry Rollins knows there's far more to 1600 Pennsylvania Avenue than meets the eye. From dissecting the shape of the Oval Office to uncovering why a brothel once operated on White House grounds, Henry uncovers the most thought-provoking details about the Executive Mansion.

They are an elite force of brave men and women who put their lives on the line. Their mission: to guard the most powerful person in the world. But just who are these American heroes? And what secrets are they protecting? This episode goes inside one of the most top-secret law enforcement agencies in the United States. But is there more to the Secret Service than just protecting America's greatest asset? And do recent scandals signify a growing problem within the ranks? Current director of the U.S. Secret Service, Julia Pierson, discusses the history of the agency and the growing threats against the office of the President. Former U.S. Secret Service special agent, Dan Bongino, reveals the grueling agency selection process and the psychology involved in assessing ever-present dangers. And Political Journalist, Marc Ambinder, examines the scandal in Cartagena, Columbia and how it has impacted the culture within the Secret Service.

Is there a top tier of presidential toughness that sets some of our commanders in chief apart from all the rest? Everyday objects reveal the real stories behind some of the most amazing presidential feats, from the bottle-thick eyeglasses that turned one man into an unlikely war hero, to the wooden cane that took down a would-be assassin, to the coconut that saved Camelot.

In this episode, we look at the ways that American English has been transformed by American presidents, by the language of sex and romance, and by good and bad manners. We'll also explore how easy it is to insult people of different groups without even realizing it. Did you know who invented the phrase Founding Fathers, and what the Founding Fathers originally called themselves? Or how American presidents popularized terms like "three martini lunch," "lunatic fringe" and "keep the ball rolling"? When it comes to insults, did you know that the cheer "hip hip hurray" was originally anti-Semitic, "hooligan" was anti-Irish, and the phrase "in cahoots" was anti-French? When it comes to sex, how did a diet of meat give us the word "mating," why do young men "sow their wild oats," and why is the word "hysterical" an insult to women? And when it comes to manners, we'll explore the strange roots of words like "posh," "snob," "stuck up" and even "hello" and "goodbye.

The U.S. Bullion Depository, better known as Fort Knox, is the home of the United States Army and one of the world's most top secret fortresses. Hidden deep inside the vault is an estimated $73 billion dollars in gold. Almost all information about it is classified. Through interviews with eyewitnesses, rare photos, and rarely seen films, we will construct a picture of what the building might look like. Hear testimony of those journalists and congressmen who were among the select few invited inside in 1974. Discover the history and secrets behind the Army's tank warfare and the classified military technologies it will use to fight the wars of the future.