Architectural firm Shears Atkins & Rockmore wanted the new Denver Housing Authority’s Mariposa building to reflect the city's focus on health and wellness—so they reached out to Interhacktive to see what could be done. Working closely with ADX Portland, the group created a beautiful chandelier that reacts to people using the stairs. 

By walking up the stairs and touching the handrail, visitors can activiate LED lights and sounds. One hundred and forty different lamps have been set up to create a 40-foot-tall light fixture. There are 36 different buttons throughout the building that can be pressed for different responses. 

The fixture is up now, so if you're in Colorado, you should check it out!