Here are five memorable moments:
The uninvited rain
Spectators, VIPs, and athletes alike found themselves drenched or huddling in transparent ponchos.
Rain did not dampen the spirits of the people attending the ceremony. Source: SIPA USA / Belga / Jasper Jacobs
Some spectators refused to let the downpour get them down. “I’ve got such an adrenaline rush. It’s very exciting,” said Selene Martinez, 42, who had travelled from Mexico for the ceremony.
“It’s a great idea. The performances are awesome. I just wish it wasn’t raining,” said Pauline Brett, 69, who had come from Chicago with her family.
A floating parade down the Seine
Led out by Greece through jets of water cascading from a bridge, accompanied by an accordion player, around 7,000 athletes cruised down a 6km stretch of the Seine to the Eiffel Tower on 85 boats.
Delegations were transported in 85 boats down a crowd-lined River Seine. Source: SIPA USA / Pasquale Golia/IPA Sport
Braving the heavy rain, some 300,000 people lined the river banks to cheer on the armada carrying competitors past the city’s iconic sights: the Eiffel Tower bearing the five Olympic rings, the Louvre and Notre Dame Cathedral.
A total of 85 boats carried the team delegations on a four-mile journey through the centre of Paris, with more than 300,000 spectators watching from the riverside and bridges.
Lady Gaga sings in French
The 38-year-old has said it was her “supreme honour” to perform at the Paris Olympics opening ceremony.
Lady Gaga rented pom poms from the Le Lido archive —a French cabaret theatre—, and collaborated with Dior to create the costumes. Source: AAP / John Walton/PA
“This song was sung by Zizi Jeanmaire, born in Paris a French ballerina, she famously sang Mon Truc en Plumes in 1961”, Gaga said.
Among the other performers were pianist Alexandre Kantorow and French-Malian singer Aya Nakamura, who sang in a golden dress paired with gladiator boots and gold jewellery.
A flying cauldron and Celine Dion’s great comeback
The cauldron was lit by France’s most-decorated track athlete Marie-Jose Perec and three-time Olympic gold medal-winning judoka Teddy Riner.
The Olympic cauldron was lifted by a hot-air balloon. Source: SIPA USA / Алеев Егор
The flame then lifted 30 metres into the Parisian night sky in a hot air balloon, as Canadian singer Celine Dion sung Hymne A l’Amour under the Eiffel Tower.
Las month, Dion, who has been battling a debilitating rare neurological condition, had vowed she would fight her way back from the disease that has kept her off-stage.
A massive security operation
The unprecedented ceremony sparked a colossal security operation in a city where memories of the November 2015 Islamist attacks are still raw.
A massive security operation was deployed to keep the event safe. Source: SIPA USA / Bildbyran/Maxim Thore
Around 45,000 police and paramilitary officers were on duty to protect the ceremony, along with 10,000 soldiers and 22,000 private security guards.
Snipers, specialist frogmen, and AI-augmented cameras were deployed, with airspace closed and the area around the Seine virtually locked down.