Norway's Therese Johaug capped off a brilliant individual campaign, and her Olympic career, in Beijing as she claimed a third gold of the Games in cross-country skiing.
Johaug, who missed the 2018 Games due to a doping ban, won the very first gold medal in Beijing and rounded off the cross-country skiing events with a victory in the women's 30km mass start on Sunday.
It took Norway's gold medal total to 16, four in front of second-best Germany.
Johaug had already suggested she would be retiring before the next Olympics, in 2026 in Milan and Cortina d'Ampezzo, and the 33-year-old is set to go out on top.
"It is a dream come true that I can stand here for Norway with three gold medals in the same Olympics," she said. "I was so, so happy 14 days ago when I got my first one, and I cannot believe I have more. It's fantastic to end my Olympic career with these three gold medals."
Jessie Diggins took silver, becoming the first American woman to win a distance medal in cross-country skiing, despite having struggled with food poisoning this week.
Diggins said: "That might have been the best race of my entire life, I'm not going to lie. It was also maybe the hardest race of my whole life."
Kerttu Niskanen took bronze to secure her second medal of the Games.
Great Britain break their duck
Great Britain finally claimed their first gold of the Games, as Eve Muirhead led her women's curling team to a 10-3 thrashing of Japan.
It followed on from the men's team taking silver on Saturday. The gold was Team GB's first in curling in 20 years.
"It's a dream come true," Muirhead, told BBC Sport. "That was my third semi-final, and the two I lost were hard but I bounced back and here we are. We are Olympic champions. It's such a special moment."
Finland end 70-year wait
Finland won their first Olympic gold in men's ice hockey, as they defeated the Russian Olympic Committee (ROC) 2-1.
It took Finland 70 years to win gold. They had previously clinched bronze in 1994, 1998, 2010 and 2014, and silver in 1988 and 2006.
The victory earned a presidential seal of approval, too.
"I heard our president is going to call me and I would like to talk to him," said coach Jukka Jalonen.
Dominant Germany claim three more medals
It has been a brilliant Games for Germany, who have taken seven bobsleigh medals, adding to six golds and three silvers won in skeleton and luge. They have dominated on the tracks.
Francesco Friedrich steered Germany to a 12th and final gold, in the four-man event on Saturday, while Johannes Lochner finished second behind his team-mate.
Pilot Friedrich has now equalled compatriots Kevin Kuske and Andre Lange as the bobsleigh athletes with the most titles, with four gold medals each.
"We hope it goes on," he said. "Our goal is to make four more years. We want to make the Olympics with all our friends, our sponsors in Cortina. It's near Germany, so maybe we can make one or two buses for all our families and friends and sponsors to finish our careers together."
Germany also had a silver to celebrate in alpine skiing. They finished behind Austria and ahead of Norway in the mixed team parallel big final.