This Italianate style building was added to the List of City of Pittsburgh historic designations on July 27 , 1995 .
Mamaux Building located at 123 First Avenue in downtown Pittsburgh , Pennsylvania , was built circa 1865 .
This Italianate style building was added to the List of Pittsburgh     historic designations on July 27 , 1995 .
Mamaux Building located at 123 First Avenue in downtown Pittsburgh , Pennsylvania , was built circa 1865 .