On June 28, 1914, the assassination of Archduke Franz Ferdinand sparked World War I. NPR's Ari Shapiro takes a tour of the city and learns the improbable story behind that shot heard round the world.

Bosnia marked 100 years since the assassination of Austrian Archduke Franz Ferdinand in Sarajevo that sparked World War I, but the divisive legacy of the gunman Gavrilo Princip meant Serbs shunned ...

This undated photo provided by the Historical Archives Sarajevo shows Archduke Franz Ferdinand, right, and his wife Sophie shortly after they were killed on June 28, 1914.

Haaris Pasovic is a theatrical director in Sarajevo. His grandfather was a teenager working in the family shop on June 28, 1914, and actually heard the gunshots that killed Archduke Franz Ferdinand.

In Sarajevo, Austrian President Heinz Fischer was guest of honour at the concert in the capital's restored City Hall, known as Vijecnica, where Ferdinand attended a reception on June 28, 1914.

Sarajevo, Bosnia Austria—June 28—Archduke Franz Ferdinand Crown Prince of Austria-Hungary and his wife Duchess Hohenberg were murdered today by a young Bosnian student, a Serb.

Greg King and Sue Woolmans. St Martin's, $27.99 (400p) ISBN 978-1-250-00016-3 For all the horror that his assassination caused, Archduke Franz Ferdinand the man remains under-recognized.

In 1914 Archconspirator Gachinovich had been obliged to flee to Switzerland, but Bosnian rebels went to confer with him and at these conferences the details of Franz Ferdinand’s assassination ...

The shot that killed Archduke Franz Ferdinand of Austria-Hungary was fired a hundred years ago this weekend. The assassination in Sarajevo, on June 28, 1914, triggered World War I and changed the ...