Has there been a super-spreader type event that was held outside?
I'm assuming that's tongue-in-cheek, that no one really questions whether those have occurred.
But, anyway . . .
Of course there's been a lot of outside Super Spreader events, like the Harley Rally in Spearfish, football games, college parties, weddings and social gatherings, Mega-Church events, protests, the Memorial Day and 4th of July pool parties at Lake of the Ozarks, and, God forbid I say it, Trump rallies. The South Dakota events and the LOTO pool parties spread it widely throughout the Midwest.
And lets not forget that event on the South Lawn introducing Amy Coney Barrett . . . and other White House events.
Feel free to add to the list.