While walking by Bloomingdale’s flagship store in New York, you may have noticed a series of neon flowers in the windows that come to life when you pass.

The unusual interactive light and sound install ation is part of the Häagen-Dazs Power Flower exhibit, created by Antenna Design and presented in partnership with Bloomingdale’s and with the support of NYC & Co.

Designed as a tribute to New Yorkers, the Power Flowers—which are running until Jan. 31—are equipped with motion sensors that enable the flowers to “bloom” when folks pass by and fade when people move away, creating a trail of light and sound.

The work is the first project to debut as part of the ice-cream brand’s national cultural initiative, “The Art of Pure Pleasure.”

The “energy radiating from the New Yorkers” gives the Power Flowers their life, said Masamichi Udagawa, co-founder of Antenna Design, noting the exhibit had to be “sweet” in nature to tie in with the Häagen-Dazs brand. “We knew from the beginning it had to be something really positive, and it also had to have some kind of public appeal,” he said of the concept.