Des Moines-based Neumann Monson Architects has breathed new life into a historic industrial warehouse in Iowa by transforming the 117-year-old building into LEED Platinum multi-tenant offices. Commissioned by Blackbird Investments, this eco-friendly renovation not only involved salvaging and reusing original elements in the century-old building, but also inserting energy efficient systems including a combination of geothermal and solar that have helped the project achieve net-zero energy certification.