Updated, 7:48 a.m.

Good morning on this damp Monday.

Between the Radio City Rockettes and the Rockefeller Center Christmas tree, the holidays in New York City are nothing if not flashy.

Another beloved, sparkly holiday tradition? The window displays that line Fifth Avenue’s iconic storefronts.

The displays do far more than advertise clothing; they are works of art in their own right. And though they emerge for only a few months every year, the artists behind them work on them year-round.

We spoke to Mark Gagnon, the artist behind one of the windows at Bergdorf Goodman. The store’s holiday theme this year was “To New York With Love.” Mr. Gagnon designed the window paying tribute to the New-York Historical Society.