Next time you visit old town Pasadena you may be in for a suprise. When you slink down an alley off of Fair Oaks and Colorado, the next thing you see will be a four-story, 35-foot-tall skyscraper, sitting in the middle of a courtyard. It’s an installation by artist Chris Burden (yes, he’s the one that did the cool lights and all the matchbox cars at LACMA) called Small Skyscraper (Quasi Legal Skyscraper).

Burden collaborated with LA architects Taalman Koch on the open design, which conists of slabs of 2x4s supported by a thin aluminum frame. Burden started envisioning the project back in the 90s, but at that time the idea was for a solid structure made of concrete blocks. This one is lightweight and seems almost like an erector set. Presented by the Armory Center for the Arts, Small Skyscraper will be on display until November.