As a new experiment in underground retail space opened on Tuesday, a question I never really thought I would ask crossed my mind: Will New Yorkers stop in the subway to buy artisanal mini doughnuts? It’s very much a question of the moment, but with Goldman Sachs fronting over $11 million for Columbus Circle’s TurnStyle, the first privatized retail concourse in the subway system, there is a lot riding on the answer.

TurnStyle has been in the works for years. It’s the brainchild of Susan Fine, a principal at OasesRE who has overseen the rebirth of retail spaces in both Grand Central and Rockefeller Circle, and it was originally supposed to open last year. But time is a fleeting concept when it comes to MTA projects, and TurnStyle, a 30,000 square foot market outside of fare control and underneath 8th Ave. from 57th St. to around 59th St., opened yesterday.

Before the renovation to the Columbus Circle, this passageway was a bit forlorn with a few uninspiring shops and empty spaces. The MTA booted everyone out seven years ago, and now, after a $14.5 million private investment that included a $8.7 million construction loan and a $3.6 million equity investment from Goldman Sachs, the space reopened with a veritable New York 2016 feel. Whether you find that to be a positive or a negative is an inherently personal conclusion.

So what is this thing called TurnStyle anyway? It has a cute name and 39 retail spaces, including 20 that the company is calling “gourmet eateries.” It features takeout windows, like the doughtnut shop, and sit-down joints, ranging from sushi to pizza to crepes to grilled cheese. Eater has a full rundown of the food spaces. There are retail and pop-up spots that included a clothing boutique and a hat store, and of course, there’s a Starbucks, a florist and a wine shop for when you need to grab that bouquet and a bottle on the way to the D train.

“We bring choice, convenience and modern, clean design to the 90,000 daily commuters who use this Midtown hub,” Fine said. “TurnStyle is leading the movement to make urban public space more dynamic and engaging. Our vision was to reimagine the subway experience by bringing Main Street underground, and make TurnStyle a destination in its own right and become a new part of the fabric of this neighborhood.”

The question is: Will it work? It helps that Columbus Circle is the seventh busiest subway stop in the city with 23.3 million entries last year. Located at a popular spot for workers, residents and tourists, the built-in audience is tremendous. Plus, the spot looks good. With better lighting and fixtures, it’s brighter and cleaner with colorful tiles and digital signs. Even those subway riders who didn’t know about it stopped to note the environment last night. It could be a model for other underused open spaces in the subway — so long as these spaces can attract the right passenger volume.

It’s possible then that TurnStyle works only because of where it is. It’s likely a model that could be implemented to great success in the concourse underneath 8th Ave. at 42nd St. and perhaps in a few other closed off areas of the subway (such as the passageway under 6th Ave. in the upper 30s or between 7th and 8th Avenues underneath 14th Street). It’s unlikely to work in, say, a G train station with wide and empty mezzanines because the foot traffic isn’t there.

But for now, it’s a novelty and a well executed one at that. The MTA profits off of the rent, and Fine and her partners draw in revenue as well. It may not be an all-encompassing solution to the dreariness of everyday subway riding, but it’s a brighter spot in one corner of the New York City subway system.