Susanna Kallur stormed home to win the 100 metres hurdles in front of her home crowd.
The Swede was sensational as she clocked a time of 12.59 seconds to finish first with yards to spare ahead of Ireland's Derval O'Rourke and Kirsten Bolm of Germany.
O'Rourke set an Irish record time of 12.72secs to initially take silver ahead of Bolm despite having a season interrupted by injury problems.
The winner of the world indoor 60m title earlier this year had to sweat it out for five minutes before she was given the decision ahead of the German, who shared the same time.
However after a protest by Germany, the European Athletics Association have decided that O'Rourke and Bolm dead-heated and will now both be awarded silver medals.
After her victory Kallur told the BBC: "I felt the support was really good - it made me calm at the start. It is just amazing to do this well in Gothenburg.
"I admit I was very nervous before the final, but when I heard the crowd shouting, 'Kallur! Kallur!' it made me calm."
O'Rourke ignored advice to take a rest from hurdling after picking up an injury which constantly troubled her when training - and was assisted by Limerick physio Gerard Hartman.
And her efforts were rewarded as she added another major medal to her collection in the sold out Ullevi stadium.
"I tried to beat Susanna, but this night belongs to her in front of her home crowd," she said of the gold medallist who finished behind her at the World Indoors in Moscow in March.
"But I wanted a medal and I knew it would be very difficult in lane one.
"I just ran and kept my focus on winning. I am so happy.
"This season means more to me than my world indoor title.
"My parents are here, my coach (Jim Kilty) and so many Irish fans - and I've done the national record. It's amazing," she said after the greatest achievement of her career.