The newly engaged duo smiled and shook hands with many who braved the cold to attend what's described as a "walkabout" in Nottingham, which is located roughly 128 miles north of London.
But it marks the first formal visit by the couple in what will be a six-month tour of the United Kingdom, allowing the American former actress to get to know her new home.
In the central English city of Nottingham, Harry and Markle, both wearing long navy overcoats, greeted hundreds of smiling well-wishers waving British and USA flags, chatting and shaking hands with onlookers who braved freezing weather to welcome them.
Markle said she can't wait to meet the young people Prince Harry has spoken about.
Mary Cooper, 60, who had been waiting to see the prince and his bride-to-be since before 9am, said: "I think it's absolutely wonderful that both he and his brother have found happiness".
Their outing comes just days after the gorgeous pair announced their engagement on Monday, Nov. 27, one month after Life & Style exclusively revealed that the handsome redhead proposed to the Suits alum last month.
Meghan Markle, fiancee of Britain's Prince Harry, arrives at the Nottingham Contemporary Centre. The day included a visit to Terrence Higgins Trust, an HIV charity.
She was also keen to travel around Britain to get to know the country that will become her home as she intends to become a British citizen, the spokesman added.
Their wedding is scheduled to take place next May at Windsor Castle.