Tottenham secured Champions League qualification, denying north London rivals Arsenal in the process, with an emphatic victory over already-relegated Norwich at Carrow Road.
Spurs needed just a draw to seal a top-four finish, but ensured victory in stress-free fashion after first-half goals from Dejan Kulusevski and Harry Kane quickly dispelled any pre-match nerves among the travelling supporters.
Kulusevski added a third with a brilliant left-footed strike on 64 minutes before Son scored twice to give him a share of the Golden Boot, putting him level with Liverpool's Mohamed Salah on 23 goals apiece.
Tottenham's return to the Champions League comes after a two-year absence, having participated in the Europa League and Europa Conference League in recent seasons.
Their qualification, helped by a 3-0 win in the north London derby on 12 May, will go down as a good ending to a turbulent season in which Antonio Conte was appointed boss following Nuno Espirito Santo's miserable four-month reign.
Conte's side confirmed their return to Europe's top club competition with minimum fuss as they swept aside a Norwich team already preparing for another season in the Championship.
Kulusevski later said: "Very good. This was exactly how I hoped it would happen and it's even better. We did what we had to do. The season is finished, I can't wait to go and celebrate with my family.
"We were very excited. it's never 100% sure in football. Anything can happen."
On Son Heung-min sharing the Golden Boot, he added: "I had a chance to shoot and saw Son and thought I can't shoot. We're very happy for him."
"I felt embarrassed about what happened before. I thought I can't finish the season like that. Those are my goals.
On coming off when he was chasing a hat-trick, he said: "I was just happy because the season was over. I did everything I could and I'm happy with how I played these four months.
"Antonio Conte is a winner. He does everything required to win. He's a role model. I want him to stay and be my manager."
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