Over the past several months I have been photographing Downtown Crossing's mega construction project at the former Filene's department store site which is to become Millennium Tower. Millennium Tower incorporates Filene's "Burnham Building" as historic low-rise remnant adjacent to a 625 foot glass tower to be constructed at the corner of Washington and Franklin streets. When completed, Millennium Tower will be home to 450 luxury condos as well as retail and office tenants.