US President Donald Trump and his wife Melania have arrived at the viewing stand on the Champs-Elysees to attend the Bastille Day parade.
The Trumps were greeted at the Place de la Concorde by Brigitte Macron, the wife of French President Emmanuel Macron.
Macron arrived minutes later after being delivered via an open-air, military vehicle and reviewing the troops.
Macron invited Trump to be the guest of honour at Friday's celebration, which also commemorates the 100th anniversary of the US entry into World War I.
The traditional display of military might comes amid tight security, following two years of Islamic extremist attacks in France.
Trump is scheduled to return to the U.S. after the military parade and fireworks display marking the storming of the Bastille during the French Revolution.