Traditionally, there was always Christmas carroling in Jackson Square on Christmas Eve. But with the epidemic, it will probably be cancelled this year. I'm guessing, but check first.
You can never be sure on exact events but there will be a large Christmas tree atop the stairs opposite of the cathedral
Christmas activities
Check with city hall
You can alway go to their page for updates on what is going on in Jackson Square.
Check the internet
look on Google
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