Located approximately 160km north of Yellowknife - the capital of the Northwest Territories - William and Catherine paddled out to the romantic spot on Blachford Lake to watch a midnight sunset and dine on a local feast.
The pair would have been able to enjoy what is dubbed the longest sunset on the planet, as the area is situated so far to the north of the country that it hardly gets dark at all during the summer months.
PHOTOS: Wills and Kate tour Canada
Tessa Macintosh, who runs Blachford Lake Lodge, told MailOnline: "Its real name is Eagle Island, but ever since my wedding night we've called it Honeymoon Island.
"When I was taken there I thought my new husband was the most romantic man on earth. I'm sure that is just how Kate must feel now."
Tessa's husband Mike Freeland thinks the break will give William and Catherine - who married on April 29 - the perfect opportunity to "recharge their batteries".
He said: "The island is very beautiful. The midnight sunset here is regarded as the slowest sunset in the world and it is very spectacular. The island has a very special feeling and is incredibly romantic. It will be wonderful for them.
"I think it is tremendous that they have decided to come here and spend time. They may not have long but after all the chaos of the past few days this really will re-charge their batteries."
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