Thousands of them march through the city in kilts, turning Boston into a branch of Glasgow and drinking the bars dry: The chance to make history by advancing to the knock-out stage of a World Cup has sent the party-loving Scottish fans in the United States into a collective frenzy.
Scotland started the tournament with a 1-0 win against Haiti and it's hard to imagine what will happen if they secure a victory against Morocco on Friday - and make it past the group stage for the first time in their history.
"We know we have the best fans in the world, and we also know how long they've been waiting for this moment. They'll enjoy it either way, but our job is to give them genuine moments they can cheer about," captain Andrew Robertson said.
'We've never seen anything like it'
The 1-0 win over Haiti was Scotland's first World Cup victory in 36 years. Since then, Boston has turned into one big party hotspot.
"We've been here for over 30 years, and we've never seen anything like it. We've tripled our sales compared to St Patrick's Day," Noelle Somers, chief operating officer of the Hennessy's Bar, told the Boston Globe newspaper.
On the evening after the opening match, the bar ran out of beer.
"The Scottish fans have brought back to the city the fun that we had lost over the winter," Somers said.
The Samuel Adams Boston Taproom reported that guests drank all the lager beer within a few days.
"They're drinking everything," said Jennifer Monastesse, co-owner of an Irish pub in the city centre.
To be better prepared for the upcoming weekend, as Scotland play once more in Boston, an extra shipment was ordered. In addition, there are significantly more refrigerators available than usual.
'Now we're going to win this thing'
About 30,000 Scots are said to have travelled across the Atlantic for the World Cup matches. Add to that about 10,000 Boston residents with Scottish roots. As a result, the opening victory against Haiti felt like a home game.
"The fans' energy reflects on the team," Robertson said.
The fact that the 1-0 win was hard-fought, lacklustre, and not exactly encouraging didn't seem to bother anyone. On the contrary: "Now we're going to win this thing," one fan shouted.
Wrapped up in their blue-and-white flags, the Scots seem to be flooding every corner of Boston.
During the day, they stroll through the park or along the harbour before they start filling up the downtown pubs in the late afternoon. By then, at the latest, the unofficial World Cup anthem, "No Scotland, no Party," is being belted out non-stop.
New England or New Scotland?
So far, everything has been peaceful, as the police confirmed to dpa. Their main task is to remove traffic cones from statues. Almost every sculpture in the city now sports one of these orange-and-white cones.
The practice is familiar to anyone from Glasgow, where the Duke of Wellington statue at the Gallery of Modern Art has been wearing a cone since the 1980s. The visual is now ingrained in Glasgow's identity.
And the main attractions in the city are no longer the Boston Tea Party Museum or the Freedom Trail, which connects historic landmarks, but bagpipers in kilts.
"Rename New England to New Scotland," demanded Noel, an 83-year-old Scotland fan who has travelled to Boston specifically for the occasion.
