...with connections to everywhere. Three of the 2012 “Top 250 Architecture Firms� are located in Omaha. #5. HDR Architecture, Omaha Nebraska Offices in Asia, Australia, Europe, Middle East. #15. Leo A. Daly, Omaha, Nebraska Offices in 30 locations worldwide. #26. DLR Group, Omaha, Nebraska Offices in 20 locations in the US and China. Source: Architectural Record