More changes in store for Harvard Square A New York real estate firm bought a prominent building at the corner of Mass. Ave. and Church St. By Tim Logan Globe Staff,Updated December 23, 2020, 12:12 p.m. Email to a Friend A retail and office building at the corner of Massachusetts Avenue and Church Street in Harvard Square sold this week for $45 million.Gazit Horizons (Custom credit) CAMBRIDGE â Pandemic or no, itâs a safe bet that the nationâs oldest and most prestigious university will keep on going. And that makes a building across the street from Harvard Yard a good investment, no matter whatâs going on in the world.