This question relates to a Historic site.
Question: An architect is working on the rehabilitation of small city hall building that is on the National Register of Historic Places. The existing building is two stories with wood framing, solid masonry exterior walls with red brick facades, wood double-hung windows and a gabled, high-pitched slate roof.
Which design elements should the architect suggest for a new addition on the rear of the building?
My answer was - Aluminum frame windows matching the scale and proportion of the existing windows
Correct answer - Metal stud brick veneer walls on the addition
I am confused since I thought additions to historic sites should look complementary to the existing historic building and should not match the look of historic buildings?