Transforming an outdoor recreational space into an interactive evening wonderland, this series of variously-sized swings (and accompanying activities) encourages playful nighttime interactions.

Designed by Howler + Yoon Architecture (images by John Horner Photography) and located at Lawn on D in Boston, the focal point of the installation is the set of round hammocks filled with LEDs that change color as you sit on, swing or spin them.

The lights use customized micro-controllers, converting motion into changes in hue and luminosity, starting as a standard white by default. Also on offer: free wireless internet and various backyard-type ball games.

The swings come in three sizes and are set to be on display (and open to the public for play) through November, but it might be best to enjoy them now while the summer weather still lingers. But don’t worry: rain or snow, they will leave a light on.