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Australian troops (widely known as ‘Diggers’) at Anzac Cove in April 1915

The Gallipoli campaign: a defining moment in Australian history.

British military behind a barricade, 1916. (Photo by ullstein picture via Getty Images)

The Easter Rising: when Ireland went to war.

Letters from World War Two leaders.

Osborne House from terrace.

Inside Osborne: Queen Victoria and Prince Albert's island residence.

Henry John Temple, 3rd Viscount Palmerston (1784 - 1865), the British Liberal statesman who served almost continually as Prime Minister between 1855 and 1865, pictured circa 1860. (Photo by Herbert Fry/Hulton Archive/Getty Images)

Lord Palmerston: the people’s champion.

An illustration from 1883 shows the phrenology chart of the skull

The Victorian phrenology craze.

Notre Dame of Paris at first light (Photo by Captblack76-Dreamstime.com)

Notre-Dame.

Anita Anand, photographed in London. "My grandfather was in Amritsar on the day of the massacre. This story has been woven into my DNA," she says. (Photography by Alastair Levy)

Books interview with Anita Anand: “Singh hoped that he would be the catalyst for a revolution”.

Seeking to remove opponents who questioned his right to be head of church and state, Henry VIII was ruthless in his pursuit of those he deemed traitors. (Image by Alamy)

Henry VIII's hitmen: the Tudor king's secret hunt for traitors.

The west Cornish tomb Lanyon Quoit, which dates to the Neolithic period (3500–2500 BC). The Anglo-Saxons believed that ancient burial sites were cursed – and guarded by dragons. (Image by Dreamstime)

Giants, dragons and Middle Earth: the Anglo-Saxon fear of the past.

A protester in a headlock, Southall, April 1979, when a member of the Anti-Nazi League died after being struck on the head. (Images by Getty Images)

1979: Britain in meltdown.

Thatcher holds up two shopping bags to show how much less a pound would buy due to inflation under Labour. (Photo by Keystone/Hulton Archive/Getty Images)

Are we still living in Thatcher’s Britain?.

A souvenir for a burlesque adaptation of the classic opera 'Carmen' at the Gaiety Theatre, 1890. (Image by Bridgeman)

Victorian burlesque: cheap thrills for the chattering classes.

Empire Cinema and Casino, Leicester Square, London. It was originally a theatre and ballet venue, before reopening as a music hall in 1884. (Image by Alamy)

History explorer: The birth of British cinema.

The photogenic Trevi Fountain is a highlight of most visits to Rome. (Image by Getty Images)

My favourite place: Rome, Italy

Wilfred Thesiger in Oman, c1946. "He was able to cope without sleep, and aI don't think he knew pain," says Frank Gardner. (Image by Bridgeman)

My history hero: Frank Gardner chooses Wilfred Thesiger.

Hever Castle, Anne Boleyn's childhood home in Kent. (Photo by Prisma Bildagentur/UIG via Getty Images)

8 must-visit castles with Tudor connections

Blenheim Palace in a c1880 print from ‘A Series of Picturesque Views of Seats of the Noblemen and Gentlemen of Great Britain and Ireland’, edited by Reverend FO Morris, Volume I, William Mackenzie, London. (Photo by The Print Collector/Print Collector/Getty Images)

10 things you might not know about Blenheim Palace

Melvyn Bragg speaks to the History Extra podcast about the 12th-century love story of Heloise and Abelard. (Photo by Awakening/Getty Images)

Melvyn Bragg on Heloise and Abelard.

A battle of wills: why the South lost the American Civil War

President Abraham Lincoln visiting soldiers encamped at the Civil War battlefield of Antietam in Maryland, 1 October 1862. (Photo by Rischgitz/Getty Images)

The American Civil War: 7 facts and fictions.

On the latest History Extra podcast, Christopher Somerville discusses his experiences of visiting some of Britain’s historic cathedrals, including Wells Cathedral, pictured. (Photo by Roger Utting | Dreamstime.com)

Exploring Britain’s cathedrals.

c1943: Soldiers enjoy a baseball match at Wembley Stadium in London between the United States Army and Canadian Forces. With them sits Bobby, the mascot of the Canadian Highland Scottish regiment. (Photo by Hulton-Deutsch Collection/CORBIS/Corbis via Getty Images)

Animals at war: 12 amazing pictures

Hardian's Wall, a world heritage site. (Photo by Getty Images)

A tale of two walls: how Hadrian's Wall inspired Game of Thrones.

The food served at the wedding of Joffrey Baratheon and Margaery Tyrell may be inspired by accounts of ancient Roman excess, says Ayelet Haimson Lushkov. (© Home Box Office, Inc/Sky Atlantic)

Power plays and scheming queens: the ancient history behind Game of Thrones.

Gerald Heard had a peculiar idea that the UFOs then being sighted all across the globe, as such as this ‘sighting’ in Sicily, were piloted not by humanoid ETs, as you may have presumed, but by alien super-bees from Mars. (Photo by Bettmann/Getty Images)

6 of history’s strangest ever theories about outer space.

Portrait of Edward IV, the first Yorkist King of England.

Edward IV: facts about his life, death and reign

Old Crofters Cottage, near Broadford, looking North, Isle of Skye, Scotland. (Photo by Getty Images)

The Scottish Clearances.

What is the nature of Margaret Thatcher's legacy?

A US soldier teaching two junior 'rookie' recruits how to clean a gun during the First World War

7 things you (probably) didn’t know about America’s entry and involvement in the First World War.