The museum is a 560,000 square foot (52,000 m2), Beaux-Arts building.
Columbia won a grant to survey the historic windows in its Beaux-Arts buildings.
The Beaux-Arts building is made of terra cotta and brick.
Beaux-Arts buildings ordinarily called for grand entrances through triple portals, which were reached by stairs.
The designation report said it was one of the best Beaux-Arts buildings in the city.
The 1911 Beaux-Arts main building of the Yonkers train station is to the northwest.
Two 1910 joined four-story brick structures are the only Beaux-Arts buildings in the district.
"The big question was, what do you do inside one of this country's most distinguished Beaux-Arts buildings?"
Fifty years ago, when people wanted to tear down Beaux-Arts buildings, they believed they were white elephants.
The Beaux-Arts building was located on a hill overlooking the county seat.