Giant red flowers are blooming in Jerusalem’s Vallero Square. They’re an awesome interactive public art installation entitled Warde, designed by HQ Architects. The towering blossoms are motion-activated, programmed to inflate/bloom whenever pedestrians walk past or trolleys arrive.

To perfectly describe their installation, HQ Architects says, “The urban space suddenly reacts to the people using it.” People can also utilize the flowers for shade from the sun or for light when nighttime approaches. And once the square is no longer bustling with people, the flowers wilt and close, their vibrant petals resting until the next surge of activity within their vicinity encourage them to bloom once more.

Watch this brief video to see the Warde blossoms in action:

[via Free York, My Modern Metropolis, and designboom]