Not. And it needn't be. Skip the bread and circuses, and just make the city work well for its residents.
World class cities are like London, UK, where the museum are free and there's tons of things to do. In 2022 I visited London for ten days, and here's everything I saw, not including the shops like Harrods, F&M, etc. and a fun train ride out to tour and lunch at Highclere Castle (Downton Abbey).
Natural History Museum
British Museum
Victoria and Albert Museum
Kensington Palace Tour (and high tea)
Museum of the Home
Cutty Sark
Royal Geographical Society’s Shackleton's legacy exhibit
Royal Observatory Greenwich
National Maritime Museum
RAF Museum
Thames river Uber boat
HMS Belfast
St. Paul’s Cathedral (climbed right to the top)
London Monument (great fire)
London Transport Museum
Woolwich Arsenal (had to see
https://sumpmagazine.com/amc-plaque.htm)
Museum of London
Charles Dickens Museum
Science Museum
Changing of the Guard at Buckingham Palace
Greenwich Market
Portobello Road Market
Camden Market
Borough Market
Covent Garden Market
Little Venice (had coffee and a tart - not that sort - on a canal boat cafe)
Duchess Theatre (saw
The Play That Goes Wrong | MISCHIEF)
If you want to make Toronto a world class city of this level, we need better transit, free museums and a lot more to do.
And back to the highways..... you can't be a world class city when your visitors can't get anywhere in the GTA by road once they're outside the urban core.