Starbucks Invercargill is proving a tourist attraction as the southern-most branch in the world - but don't expect spiced pumpkin lattes to be added to the menu anytime soon.

Zoe Hurley, a shift supervisor at Starbucks Invercargill, said tourists from all over the world converge on the Esk St branch with cameras in hand to record their visit.

"We have special cups that say 'Southern-Most Starbucks in the World'. A lot of people say they come here specifically to purchase them. So many people have bought them that we've actually run out."

She had no idea about how people were hearing about the branch being the southern-most as Starbucks marketing was done nationally. It was likely to be word of mouth, she said.

"I guess if you're a Starbucks customer, it must be quite a novelty to say you've been to the southern-most. It's quite funny, because to us it's nothing special."

Tourists often liked consistency and they knew what they would get at a Starbucks, she said.

Some of the more odd requests included spiced pumpkin lattes from American visitors, but there was no plan to put them on the menu. Visitors from Asian countries often slurped down green tea lattes, Hurley said.

There is a Trip Advisor page for the branch being southern-most in the world, but it only has 17 reviews, mostly from New Zealanders.

Venture Southland tourism sector manager Warrick Low said Starbucks was a pop culture brand which attracted a worldwide following.

It was a familiar brand, a social hub for people from other places and an attraction to be ticked off for some people, he said.

"There's so many different tourism markets that are all about ticking boxes."

Many people visited Champagne in France as it was the home of champagne, Low said.

"For some people Starbucks is their Champagne."

Travellers often had a fascination about southern-most or northern-most locations in the world, he said.