Massachusetts

Boston Massachusetts - 1995 left 

Boston Massachusetts - 2020 right

The Central Artery/Tunnel Project, commonly known as the Big Dig, was a megaproject in Boston that rerouted the Central Artery of Interstate 93, the chief highway through the heart of the city, into the 1.5-mile tunnel named the Thomas P. O'Neill Jr. Tunnel. https://www.mass.gov/info-details/the-big-dig-project-background

Provincetown is a New England town located at the extreme tip of Cape Cod in Barnstable County, Massachusetts.

When the owners of Evergreene Golf decided to retire, they worked with Nexamp to turn their driving range into a 1.5-megawatt solar plant. Built through one of the most challenging New England winters in recent history, this project will supply steady income to the landowners and the town. In addition, its electricity will be sold to the Upper Blackstone Water Pollution Abatement District through a long-term power purchase agreement (PPA).The solar farm will produce enough clean, sustainable energy to power more than 120 homes. https://www.nexamp.com/projects/belchertown-solar

The historic canals, an extraordinary engineering feat, built in the late 1800's, converted the force of the Connecticut River into enormous industrial power, allowing Holyoke to become the first planned industrial city in the country. The main industry of Holyoke was the production of paper, and at it's height, Holyoke was the largest paper producing city in the world. Holyoke was soon coined "Paper City," a name that carries on to this day.

According to Holyoke's industrial plan, the canals, constructed like arteries bisecting the center of the city, were designed to divert and carry water from the Connecticut River down through the center of the city, passing through turbines or waterwheels located beneath the large mills lining the canals. The energy produced by the waterwheels powered the operations of the mills.
Today several water wheels are still functioning along the canals, and although much of the early industry is gone, they continue to be an abundant source of green energy, generating power for areas far beyond the mills in which they sit. 

https://friendsofthecanalwalk.weebly.com/canal-history.html

LEFT - Circa 2020
RIGHT - Circa 1995

In the past quarter century, there hasn't been that many changes to North Adams, Massachusetts although some of the mill buildings have been demolished and a large solar farm has been installed on a logged wooded area outside of the city.

In Greenfield, Mass. under Interstate 91.