Princess Diana suffered her fatal car crash in Paris, France, in the Pont de l’Alma tunnel during the early hours of August 31, 1997. She was traveling in a Mercedes-Benz with Dodi Fayed and chauffeur Henri Paul when the vehicle crashed in central Paris.
Diana survived the initial collision but sustained severe injuries and was taken to the Pitié-Salpêtrière Hospital, where she died later that morning at age 36. Fayed and Paul died at the scene, while bodyguard Trevor Rees-Jones was the only occupant to survive.
Investigations concluded that the Mercedes was traveling at high speed and that Henri Paul had been drinking. The car was also being pursued by paparazzi. A 2008 British inquest found that Diana and Fayed were unlawfully killed through the grossly negligent driving of Paul and the pursuing paparazzi.
People sometimes answer “the Pont de l’Alma” rather than Paris, but the question asks for the city. The tunnel is beneath the Pont de l’Alma, near the Seine, and the location is firmly within Paris.