<p>That pic of Comm Ave is out in Newton. Comm Ave in the Back Bay area was all landfill. [This</a> webpage](<a href=“http://www.bc.edu/bc_org/avp/cas/fnart/fa267/bos_fill3.html]This”>http://www.bc.edu/bc_org/avp/cas/fnart/fa267/bos_fill3.html) at BC has a lot of information, including animations which show the filling in of Boston. The area where most of BU is was filled in during the last part of the 1890’s.</p>