Paris 2024: How is France preparing for the Olympics and Paralympics?

The opening ceremony of the Olympic Games will see competitors parade on boats along the River Seine through central Paris on Friday.

An unprecedented security operation is in place, with organisers also facing challenges over the cleanliness of the Seine, costs and the environmental impact of the Games.

When are the Paris Olympic and Paralympic Games?

The summer Olympics run from 26 July to 11 August, with 10,500 athletes competing in 329 events.

The Paralympics take place from 28 August to 8 September, featuring 4,400 athletes in 549 events.

There will be 206 countries represented at the Olympics, and 184 at the Paralympics.

Where will Olympic and Paralympic events take place?

The main athletics events will be at the Stade de France, on the northern outskirts of Paris.

There are also Olympic and Paralympic venues in the city centre.

The Pont d'Iena, for example, is hosting cycling events, while beach volleyball is at the Eiffel Tower and the marathon starts at the Hotel de Ville and ends at Les Invalides.

Is the Seine clean enough for swimming?

Open water swimming and triathlon events are due to take place in the Seine, more than 100 years after swimming in the river was banned.

Tests done in mid-June showed that levels of E. coli in the water were 10 times the acceptable level.

However, Games organisers hope July sunshine and measures like a rainwater storage basin will make it clean enough.

Ahead of the Games, Paris Mayor Anne Hidalgo took a dip to try to prove the river was safe.

Paris Mayor Anne Hidalgo swims in the Seine to reassure people about the river's cleanliness

How are France's security forces preparing for the Games?

The Games will be protected by the largest peacetime deployment of security forces in French history

Up to 75,000 police, soldiers and hired guards will be on patrol in Paris at any one time, to guard venues and events.

The use of the Seine for the opening ceremony, with crowds watching the parade from the banks, is a first for the modern Olympics.

The opening ceremony for the Olympics is meant to feature a parade of athletes on boats on the Seine

The original plan was to give free tickets to 600,000 members of the public to watch from the river's banks.

However, the government was worried about potential threats such as a drone attack, and spectator numbers were scaled back to 326,000.

More than 220,000 of those will be invited guests, and 104,000 will be members of the public who have bought tickets.

Some 44,000 barriers have been erected, with QR codes for residents and others seeking access to the river Seine and its islands. Many of the barriers will be removed after the opening ceremony.

Intelligence services uncovered two plots against the country by suspected Islamic militants in early 2024.

In May, a man was detained on suspicion of planning an attack on the torch relay in Bordeaux, and another man was arrested in southern France over a plan to attack an Olympic football venue.

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How much are the Games costing?

The cost of this year's Games is estimated to be about 9bn euros (£7.6bn), less than any of the previous four Games - in Tokyo, Rio de Janeiro, London and Beijing.

Much of the funding is coming from private companies, as well as sales of tickets and broadcasting rights.

The government's official auditors have said it may have to pay between 3bn and 5bn euros (£2.5bn and £4.2bn) for costs such as policing.

Are the Games environmentally friendly?

The organising committee of Paris 2024 has promised to make it the greenest Games in Olympic history, with half the carbon footprint of London 2012 and Rio 2016.

The Games will be held in the same city where, in 2015, world leaders agreed to try to prevent global temperatures rising by more than 1.5C.

About 95% of the Olympic and Paralympic sites are either existing structures or temporary ones.

The organisers say they are using as much recycled material as they can - including recycled cardboard beds for athletes - and trying to minimise carbon emissions.

However, it has been reported that thousands of air-conditioning units have been ordered for Olympic Village rooms by some national teams.

Are the Games pushing up prices in Paris?

Millions of visitors are expected in Paris during the Games, with ticket holders expected to spend an estimated 2.6bn euros (£2.2bn).

Hoteliers in Paris pushed up their rates, in many cases doubling them or more, in anticipation of a big rise in demand. But there have been reports that many hotels have had unexpectedly low sales.

Bus and metro fares are also doubling in the capital during the Games. In January the Louvre art gallery put up its entrance fees by almost 30%.