This article first appeared on GreenSource. While most 19th century manufacturing hubs were known for their poor working conditions, the Pullman District on Chicago’s South Side was the country’s first model industrial town designed to provide a safer and healthier environment for the Pullman sleeping company’s workers. Over a century later, Method, the green cleaning products brand, is now carrying on the District’s progressive legacy with the construction of its new 150,000-square-foot sustainable factory. The company asked William McDonough + Partners to design its sprawling building, spanning roughly five acres on a brownfield site where the original Pullman lumberyard once stood.

At one of their first meetings, William Reue’s client handed him a piece of paper bearing a rough sketch of the home that she had been imagining for the last 25 years.