The autumn months bring with them a treasure trove of cultural events in the Greater Boston area. Though it’s not an exhaustive list, here are some that we think should be top of mind if you’re visiting in September, October, or November: Indigenous People’s Day celebrations; Harvard Square Oktoberfest; Cambridge Science Festival; Boston Ballet Fall Experience; and Boston Public Market Harvest Party. They’re a mix of free and ticketed events, some family friendly and some better for adults. But whatever the celebration, we’re confident your time in Boston will be well-spent.