By Meg Richards
Friday, May 23, 2025

An empty tunnel under Harvard Square could be turned into a venue hosting a variety of events, the Harvard Square Business Association says.
Underneath Harvard Square in Cambridge lies an abandoned MBTA tunnel, unseen by passengers for 40 years. The Harvard Square Business Association proposes to transform it into an entertainment venue – or at least look at the idea seriously.
The tunnel starts at Mount Auburn and Eliot streets and stretches to the Harvard John F. Kennedy School of Government. The MBTA uses some of it for ventilation and other mechanical purposes; aside from transportation workers, the tunnel is accessed regularly by students of the Harvard Graduate School of Design who craft creative proposals for how life could be breathed into it.
Now the association has funding to explore putting the plan in motion.
“It’s something that we’ve been working on for a very long time,” said Denise Jillson, executive director of the HSBA. “It’s been relevant for a long time, but these things don’t move quickly.”
She imagines a revamp that would turning the tunnel into an entertainment venue that’s versatile, artistic and “youthful.”
“You could do a Ted Talk in the morning, you could do an art exhibit in the afternoon and a concert in the evening,” Jillson said.
John DiGiovanni, Harvard Square developer and former president of the HSBA, said the association has been thinking about the project for 10 years and paid for its own 3D imaging of the space to help craft designs – part of some $50,000 to $60,000 in private dollars already put toward the idea.
While the ultimate project would be funded largely by an outside private developer, there have been frustrations in getting to being able to argue the venue would be economically viable and a worthwhile investment as well as a potentially “important economic engine for the city,” DiGiovanni said.
In February 2020 the association met with city leaders and several property owners to outline a plan, then “lost three years the pandemic, then spent the last couple of years working with the city manager,” DiGiovanni said. “He is skeptical about the ability to develop the tunnel into a venue. I appreciate his skepticism and his innate determination to be frugal with public funds. However, there are a variety of reasons why it’s worth spending these initial investment dollars.”
“Ticketed venues are the new anchors for districts,” DiGiovanni said. “We’re late – other districts are doing this.”
Sean Hope, who co-owns the Dx nightclub and event venue in Harvard Square, said the tunnel represents a significant opportunity, considering the challenge of finding more space in a city as old and dense as Cambridge. “This is an opportunity for Cambridge and one of our historic squares to look toward the future,” Hope said. “If you look at Assembly Row, if you look at The Seaport, these all have anchor opportunities and open spaces and something unique to draw them there.”
City manager Yi-An Huang clarified that redirecting $72,000 to find an engineering firm was “reasonable,” but the firm’s study would cost conservatively $500,000 to $1 million, and “who would fund that is unanswered.”
“I have concerns regarding whether the economics would work out – that the significant capital cost and risk would mean that it would be very difficult to bring private capital into a project like this, and ultimately it would have to be publicly funded or there would have to be a pretty significant donation,” Huang said. The refurbishment of the Harvard Square at a reported $3.3 million was on his mind he said – and that structure is small and overground.
A proposal before the City Council on May 12 asked city staff to meet with the HSBA about the tunnel proposal and consider getting started with a study of the idea. A $72,000 request for proposals would be carved out of an existing $300,000 earmarked to study closing off some Harvard Square streets to car traffic. Councillors approved the request Monday, adding the MBTA formally to the discussion.
Councillor Cathie Zusy started as a skeptic and said by Monday she’d come around to the expenditure. “Harvard Square needs a boost, and this could be just the boost that it needs,” Zusy said.