This episode unlocks the secrets of one of the most sophisticated and mysterious civilisations the world has ever known.

The ancient city of Petra, a city carved from desert rock, has baffled experts for decades. Now, new technologies resurrect the city and reveal why the spectacular civilisation was suddenly abandoned.

New evidence uncovers the ancient mysteries behind the iconic Colosseum. Archaeologists uncover the secret lives of the gladiators and make new discoveries that help explain the rise and sudden fall of the Roman Empire.

The Terracotta Army is one of China's greatest treasures, but there are still dark secrets surrounding this super-tomb. Newly discovered artefacts reveal the soldiers' supernatural enemy, and human remains point to ancient China's violent origins.

The 15th-century city of Machu Picchu is one of the greatest mysteries in archaeology. Scientists do not know why this city in the clouds was built, but investigations into secret Inca codes and deformed skeletons might finally reveal its ultimate mystery.

The Taj Mahal is one of the world's most beautiful monuments, but new investigations reveal its dark secrets. Scientists are uncovering codes that tell a shocking story of power and betrayal, challenging everything we thought we knew about the Taj Mahal.

Stonehenge is the ancient world's greatest wonder and biggest mystery. Now, new discoveries are revealing its deepest and darkest secrets, showing how ancient magic, bizarre rituals, and brutal murder built this strange monument.

A castle in Scotland could be the home of King Arthur's legendary Round Table. Scientists have made a gruesome discovery at this mysterious site: a disfigured skeleton that could reveal the castle's bloody secrets and rewrite the history books.

The series finale reveals the secrets of the ancient Chinese engineers and unravels the mysteries of the most ambitious construction in the history of mankind.

New technologies reveal the startling truth behind the largest temple ever built, Angkor Wat. Accompany experts as they uncover how this colossal structure was constructed and why one of the largest cities in the world was suddenly abandoned.

The Egyptian mega-temple at Karnak was once the political powerbase of the ancient pharaohs and the home to strange religious rituals. New discoveries of skeletons tell a story of jealousy, betrayal, and the rise of a new religion that changed Egypt.

Giant pyramids at a strange site in Mexico are revealing the bloody secrets of a mysterious civilisation that vanished 1400 years ago. Little is known about this lost culture, but new discoveries are uncovering shocking evidence of human sacrifice.

New discoveries explore the dark secrets of Tutankhamun's tomb. Archaeologists are finally finding answers to its ancient riddles, showing how his untimely death, his calamitous burial, and an act of God made a minor king the most famous of them all. Series also known as Unearthed.

The Acropolis has overlooked Athens for thousands of years. Now scientists aim to reveal how it was built, what it looked like, and how it's still standing. Series also known as Unearthed.

A medieval engineering marvel may house the remains of the Bible's Three Magi. Scientists and experts delve into the mysteries of this religious site.

In Mexico, the lost city of Chichen Itza holds ancient secrets of a strange civilisation. How was it was built and how did human sacrifice shape it?

The Playroom is a very special place for stories, adventures and discovering as Chris, Pui and their friends explore everyday themes that relate to young children's lives. Anything can become the start of an adventure! Join in the fun!

To be a Hollywood great is to fly too close to the sun, to embody the dreams of millions while placing your fate in their hearts. This program celebrates the lives of those who soared the highest.

The Playroom is a very special place for stories, adventures and discovering. Chris, Pui and their friends explore everyday themes where anything can become the start of an adventure!

Hidden away in the heart of the Salisbury Plain in Wiltshire is the abandoned shell of Imber. The 1000-year-old village was once a vibrant community before a series of extraordinary events.

The Playroom is a very special place for stories, adventures and discovering as Chris, Pui and their friends explore everyday themes that relate to young children's lives. Anything can become the start of an adventure! Join in the fun!

One of the brightest, most tragic movie stars of Hollywood's Golden Era, Judy Garland was a much-loved character whose warmth and spirit, along with her rich and exuberant voice, kept theatre-goers entertained with an array of delightful musicals. Judy shot immediately to stardom with The Wizard of Oz (1939), in which she portrayed Dorothy. Her poignant performance and sweet delivery of her signature song, Over The Rainbow, earned Judy a special juvenile Oscar statuette on February 29, 1940, for Best Performance by a Juvenile Actor.

In 2011, though ill prepared, Kim Jong-un inherited the leadership of North Korea and through the use of propaganda and brute force, he has cemented his place on the world stage. Now, the lid is lifted on one of the most elusive leaders in the world.

Veteran performer, Noni Hazlehurst, goes in search of the secrets her parents held so tightly. This journey will be a revelation to Noni. She'll come to understand the impact of war on her immediate family, and why she knows so little about her world-renowned performing ancestors.

Princess Elizabeth grew up in the Piccadilly home of her parents, the Duke and Duchess of York. The Abdication of her uncle, Edward VIII, in 1936 appeared to be a catastrophe to her family, catapulting her nervous father onto the throne as King George VI. Elizabeth became heir to the throne aged 10, and seemed to be a shy girl with a limited education. Queen Elizabeth II is the longest reigning monarch in British history, but she was neither born nor educated to take on that role. At the age of 10 her life was turned upside down, when her uncle Edward VIII abdicated, catapulting her into the position of heir to the greatest empire the world had ever seen. At the age of 21, she broadcast to the people of Britain and the Commonwealth that her whole life would be devoted to service - a pledge she renewed 60 years later at her diamond jubilee. As monarch she has appointed 13 prime ministers, from Sir Winston Churchill to Teresa May, and despite the best efforts of some politicians she has kept above the political fray. Her greatest achievement has been to transform the British Empire into the new Commonwealth of diverse and independent nations. During her reign she has experienced family tragedy and triumph, often having to choose between supporting her family and doing her duty as monarch. This eight-part series interviews the Queen's prime ministers, members of the royal household and closest friends, to build a uniquely personal picture of Elizabeth, the woman, the mother, the Queen.

There is no doubt Vivien Leigh is a screen icon who brought to life some of the most famous characters ever to grace the silver screen. A relatively unknown British actress, Vivien won the Best Actress Oscar for her first Hollywood movie playing the character of Southern belle Scarlett O'Hara in Gone with the Wind.

To be a Hollywood great is to fly too close to the sun, to embody the dreams of millions while placing your fate in their hearts. This series celebrates the lives of those who soared the highest. From Marlon Brando to Elizabeth Taylor, we uncover what drove them and why the world loved them. Contributions from contemporary commentators and current Hollywood glitterati will bring each icon's legacy up to date as we relive their most magical motion picture moments and explore the personalities behind the names.

Actor, singer and performer Bing Crosby was the definitive all-round entertainer. His singing style ushered in a whole new era of styles which we now call crooners. Radio, television, film - Crosby adapted to whatever was thrown at him at the time. One of the bestselling recording artists of the 20th century, Bing was loved, and admired across the globe. Representing wholesomeness, people thought Bing was the epitome of the decent American guy who had made it big on the screen.

A look at how Tsar Nicholas II and his wife the Empress Alexandra's complete misjudgement and lack of understanding led to the fall of the Russian Empire from being one of the foremost great powers of the world to economic and military collapse. We explore how their decisions during the war led to widespread public anger and a revolution that would eventually bring a tragic and brutal end to Tsar Nicholas' reign, making him the last Emperor of Russia. Broadcast title: The Tsar and Empress: Secret Letters.

Leonardo was an extraordinary artist and inventor. But researchers have discovered, in ancient manuscripts and drawings that prefigure many of his inventions and trace back to classical Greece, the Arab Empire and even ancient China.

Actress Greta Garbo had a greater impact on her craft than did any other actress in the 20th century. She introduced what is now called method acting to the screen, and in 28 films, 25 of them filmed in the US, redefined the image of women on the screen. Her stunning beauty and style captured the hearts of millions.

For 70 years, rumours have circulated around the small town of Walbrzych in south-west Poland about a concealed Nazi railway tunnel. How, in 1945, the original tunnel was fortified by the retreating German army with 10m of reinforced concrete, and its entrances blown up. And how anyone who spoke of the tunnel was either shot by the Nazis or pursued by the Russians after the war. Naturally, they fell silent - and the tunnel's precise location was lost in the mists of time. Then, in August 2015, ground penetrating radar pinpointed the tunnel's location. It's the 21st century equivalent of an unexplored pharaoh's tomb.

In 2011 a team from the University of Basel made two astonishing discoveries in Egypt's Valley of the Kings. By chance they came across a new tomb that was the first to contain a body since the discovery of Tutankhamun. Then they discovered that the tomb beside it, which had never been excavated before, held the bodies of around 50 people. But who were all the people in these two linked tombs? This film follows the archaeological detective story to uncover the answer. It pursues the trail that leads to one of Egypt's greatest pharaohs, Amenhotep III - and to the women he was close to. And the film also reveals the astonishing project behind the re-emergence nearby of the largest temple ever built in ancient Egypt - the lost mortuary temple of the same pharaoh, Amenhotep III.

The Seven Ages of Elvis sets out to explore exactly who Elvis was and the true meaning of his unprecedented impact on popular culture. Using Shakespeare's Seven Ages of Man as a framework, the film charts the King of Rock 'n' Roll's' extraordinary life, act by act - from his impoverished childhood in the depressed American South, through his meteoric rise to international fame, to his Vegas years and sad death in 1977. Combining archive material with personal testimonies from those who knew Elvis best, the film throws light on the secret to his triumphant, universal success and asks why audiences are still drawn to him 40 years after his death.

From teenage infatuation to her wedding to Hitler and suicide in the fuhrerbunker - Adolf and Eva: Love and War reveals the shocking lengths to which Nazi Germany's secret First Lady went to rise to, and cling to, power. The Nazis kept Eva Braun's affair with Hitler hidden until the very end. But the Fuhrer's inner circle knew she had survived against the odds to become the most powerful woman in Germany. Revealing the truth behind the influential, ambitious and manipulative Nazi bride, this is the story of Eva's incredible rise - and dramatic fall.

Anne Frank's world-famous diary comes to an abrupt end several days before she and her companions in the secret annex were arrested. This is the story of what happened next, how Anne became absorbed into the horror of the Nazi camp system. Broadcast title: Anne Frank: After the Annex.

Charlie Chaplin, considered to be one of the most pivotal stars of the early days of Hollywood, lived an interesting life both in his films and behind the camera. He is most recognised as an icon of the silent film era, often associated with his popular Little Tramp character: the man with the toothbrush moustache, bowler hat, bamboo cane and a funny walk.

At look at the obstacles Tsar Nicholas II and his wife Alexandra overcame during what was a rather unconventional start to their royal relationship. But having survived the challenges of a long-distance relationship, as well as incompatible religious upbringings, their relationship blossomed and the two were eventually married as the young tsar assumed control of the Russian Empire. Broadcast title: The Tsar and Empress: Secret Letters.

Ingrid Bergman was a Swedish actress who starred in a variety of European and American films. She won three Academy Awards, two Emmy Awards, and a Tony Award for best actress. She is ranked as the fourth greatest female star of American cinema of all time by the American Film Institute. She is best remembered for her roles as Ilsa Lund in Casablanca (1942), a World War II drama co-starring Humphrey Bogart, and as Alicia Huberman in Notorious (1946), an Alfred Hitchcock thriller co-starring Cary Grant. Before becoming a star in American films, she had been a leading actress in Swedish films. Her first introduction to US audiences came with her starring role in the English remake of Intermezzo in 1939. In the US, she brought to the screen a "Nordic freshness and vitality", along with exceptional beauty and intelligence. David O Selznick, who called her "the most completely conscientious actress" he had ever worked with, gave her a seven-year acting contract, thereby supporting her continued success. A few of her other starring roles, besides Casablanca, included For Whom the Bell Tolls (1943), Gaslight (1944), The Bells of St Mary's (1945), Alfred Hitchcock's Spellbound (1945), Notorious (1946), and Under Capricorn (1949), and the independent production, Joan of Arc (1948). In 1950, after a decade of stardom in American films, she starred in the Italian film Stromboli, which led to a love affair with director Roberto Rossellini while they were both already married.

This episode unlocks the secrets of one of the most sophisticated and mysterious civilisations the world has ever known.

Pompeii is nestled in the shadow of Mt Vesuvius, whose massive eruption in 79 AD simultaneously destroyed and preserved this bustling Roman town. It is one of the world's most iconic sites, a city frozen in time that has revealed more about everyday Roman life than anywhere else. But despite centuries of research and endless scrutiny, Pompeii still has its secrets.