These spectacular light installations by Bruce Munro can be seen in the Longwood Gardens in Pennsylvania through September 29, 2012. 

About the project:

Wander through a field of light reminiscent of flowers, discover a meadow of glowing towers changing hues, and delight in a shower of cascading raindrops fashioned from delicate lights as you are immersed in a new and truly unique garden experience. Both indoors and outdoors, by day and by night, Light will change the way you see gardens.

As if that wasn’t enough, they’re also hosting a wide range of activities including SmART Nights where you can “hear some of the region’s brightest minds explore the science of light, then share your own bright ideas in an audience-participation StorySlam facilitated by First Person Arts”.