these wood polygons should not have the name of the tree type in the name tag, instead they should use the species tags etc.: osm.wiki/Tag:natural%3Dwood

Buildings in general in watertown downtown area need to be updated so that each building structure has its own building polygon instead of these large building areas that encompass multiple individual buildings

unable to confirm that this poi: osm.org/node/358284597 is located here... anyone who knows please update if its not here...

corridors/pathways inside of the prudential center should probably also be tagged with appropriate access tag value and or access hours when facility is closed/open to public, right now most are set to access=yes which may be misleading, see: osm.wiki/Key:access for conditional tags

if there is a park here its missing a name...

Back Bay station is missing platforms

remaining pathways inside of the convention center area including Belvidere Arcade could be updated to match the other ways inside of the prudential center with corridor and access/conditional access tags to make them all consistent

monument doesnt seem to exist here, verification needed: osm.org/node/2796490800

these changesets: osm.org/changeset/112698705 and osm.org/way/993971240 look like spam, suggest removing added items or revert.