In 1908, the company opened a building stretching along nearly one-quarter mile of the Chicago River, north of downtown Chicago. The building, known as the Montgomery Ward & Co. Catalog House, served as the company headquarters until 1974, when the offices moved across the street to a new tower designed by Minoru Yamasaki. The catalog house was declared a National Historic Landmark in 1978 and a Chicago historic landmark in May 2000. In the decades before 1930, Montgomery Ward built a network of large distribution centers across the country in Baltimore, Fort Worth, Kansas City, Oakland, Portland, and St. Paul. In most cases, these reinforced concrete structures were the largest industrial structures in their respective locations. The Baltimore Montgomery Ward Warehouse and Retail Store was added to the National Register of Historic Places in 2000.