It began with a polite plea on social media from the leader of Canada.

“It’s me, hi,” Prime Minister Justin Trudeau wrote to Taylor Swift on X, using a reference to her lyrics. “I know places in Canada would love to have you. So, don’t make it another cruel summer. We hope to see you soon.”

Canada was not on Ms. Swift’s list of concert destinations last summer when she announced a batch of new shows for her tour. Or maybe she was just saving the best news — at least for Canadian fans — for last.

Now, Ms. Swift is wrapping up her blockbuster Eras Tour in Canada, sending Toronto into a glittery frenzy. Her shows have become cultural events in every city she plays, jolting local economies, uniting legions of fans and mobilizing cities around her star power.

“The Eras Tour is kind of the Woodstock of our generation,” said Jasmeet Sidhu, a Canadian photographer and director who was showcasing her images of Ms. Swift’s past performances.

Ms. Swift’s version of Woodstock, while more commercial than activist, has certainly delivered on unity: Witness the multicolored friendship bracelets that her fans — who call themselves Swifties — have taken to making, wearing and trading.