Salon d'Automne is like a big, fancy art party where many artists gather together to show off their artwork. They put their paintings, sculptures, and other creative things on display for people to see and enjoy. It started a long time ago, in 1903 in France, and it's still going strong today.
The word "Salon" means exhibition, and "d'Automne" means "of autumn," which is the season when the event usually happens. It's a place where people can go to look at all kinds of beautiful and interesting artwork, like colorful paintings, interesting sculptures, and maybe even some cool photography or mixed-media art. Some of the artists who show their work there are very famous, and some are just starting out.
People who go to a Salon d'Automne get to see lots of different kinds of art, and they can even buy some of it if they really like it. They can talk to the artists and learn more about their work, and maybe even get inspired to create their own art someday. It's a great place to have fun and appreciate the creativity and hard work of the artists.