Start with “The Île de la Cité: from the Pont Neuf to Notre-Dame”. You start at the tip of the island, where one March evening in 1314 the last master of the Templars was burnt at the stake, and you follow his day backwards to the square in front of Notre-Dame, where his sentence was read that morning. Along the way: the bridge of the charlatans, a king made from Napoleon's bronze, the square given to a judge, Marie Antoinette's prison (which more than a third of the accused left alive), a king's clock, the chapel built for a crown of thorns, the flowers and the hospital of the poor.
Then there’s “The Arc de Triomphe and the Upper Champs-Élysées”. You start at Fouquet's, where in 1919 a group of offended pilots planned an impossible flight, and two doors along you hear how a dancer who'd come from Madrid was arrested as a spy. You walk up the avenue of the blessed to where an eighteen-metre gilded cenotaph once stood, hear how the Spanish Republicans of La Nueve, the first into Paris in 1944, escorted de Gaulle down the avenue and were then left out of the picture, and you go round the star of twelve avenues: a painted-canvas arch for an imperial wedding, streets named after the Empress and the King of Rome, and a monument someone proposed knocking down.
For another side of the city, try “Belleville, from the Boulevard to the Viewpoint”. You start on the boulevard where the tax wall once stood. Beyond it lay Belleville, its cheap wine and the carnival that came staggering back down into Paris.
Choose by neighbourhood or by the stories that interest you: each route shows its distance, stops and approximate duration before you set off. The audio is written for walking, with a clear distinction between documented events and local legend. Download it in the app, put on your headphones and pause whenever something catches your eye. English and Spanish are included.