The royals received a warm welcome upon arrival - as they have at each stop during the tour.
The Cambridges did a walkabout through the streets which were lined with thousands of well-wishers. One little girl, Maddison Mills, who met the Duchess said she was 'very pretty'. The schoolgirl added: 'She seemed really worried that we had got cold waiting out for long to see them.'
William to five-month-old Leo: "That is definitely the best way to be dressed today!"
Their first stop of the day was MacBride Museum where they had the opportunity to learn more about Yukon's region.
The Duke and Duchess were very much following in the footesteps of the Queen and the Duke of Edinburgh who visited the telegraph office in 1958. They were around the same age as William and Kate are now when they visited.
William and Kate signed the Museum’s virtual guest book via morse code on a telegraph machine which was transmitted into a digital message and posted onto Twitter. The message read: 'The Duke and Duchess of Cambridge, Whitehorse, Yukon, September 2016.’ The message was typed out by former radio operator Doug Bell, 90, who last sent a telegram in 1947. William and Kate simultaneously hit the 'send' button. The Duchess commented: "Wow, that's amazing."
A look at William and Kate's first tweet.
Radio operator Doug Bell shared his history with the royals. More from the Mail Online:
'Mr Bell went on to tell the couple about the time he chatted to William's parents, the Prince and Princess of Wales, when they visited Ottawa in 1981. The 90-year-old said: ''I met your parents'' and the Duke replied: ''It seems pretty much everyone has met my family here.''
Mr Bell added: ''I asked your father if he'd been to Yukon and he said no, and I said we ought to do something about that so I called the governor general and we made arrangements. Then I got a call saying 'They can't go, the princess is pregnant'.'' ''Wow, that must have been me or Harry,'' said William.'
William and Kate met with children and elders taking part in Indigenous languages initiatives in Yukon.
Afterwards, it was time for a street party on main street.
The Healing Totem is an 11-metre totem pole dedicated to the healing of residential school survivors and their communities.
The Duke and Duchess walked through the Youth Art Festival, to view the displays, activities and performances that highlight Yukon talent.
Also present were members of Bring Youth Toward Equality (BYTE), a youth organization focused on empowering young people throughout Yukon and helping them develop confidence, skills, openness and a sense of belonging.
The Duchess donned a new red coat by Venezeulan-American fashion designer Carolina Herrera - a new designer for HRH and a favourite of her sister Pippa. The double-breasted red coat features a peter pan collar and is made of a double-faced wool and cashmere mix blend. It retails for $1,915 and is currently only available in store (hence the lack of product shots for the garment. (With thanks to Middleton Maven for the info.) In terms of designers one would like to see Kate wear, Herrera is right up at the top. Known for "exceptional personal style", and for dressing First Ladies from Jacqueline Onassis to Michelle Obama. The New York Times cited her designs as "elegant and worldly without ever being fussy".
Kate carried her maple leaf tartan shawl again today.
Kate carried her burgundy Mulberry Bayswater clutch and wore her Cartier Ballon Bleu watch as pictured below.
The Duchess accessorised with her Annoushka pearls.
William and Kate are travelling to Carcross and Montana Mountain next.