The new David Rubenstein Treehouse conference center project from Studio Gang for Harvard University has topped out near its campus in the Allston neighborhood of Boston.What will become Harvards first-ever mass timber structure is included as part of the larger 36-acre Enterprise Research Campus (or ERC) development that was announced last summer along with designs from MVRDV, Moody Nolan, and Marlon Blackwell. It follows another creative higher ed timber design from Studio Gang, the new two-buildingcampus expansion for the California College of the Arts (CCA) in San Francisco, whichwas unveiled in November.