On the Wings of Freedom by UK art studio Aether & Hemera

It really seemed like there should have been some wing-flapping motion here.
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Urban Lights Contacts by French duo Scenocosme #LightCity2018

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Harbor Memory by XXS Group #LightCity2018

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Whale Ghost by French studio Pitaya #LightCity2018

This was my favorite installation of Light City 2018 (although I may have missed some). This video doesn't really do it justice. When experienced with the full volume of the intense, vaguely ominous soundtrack, the effect is formidable.
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