Post-Gazette.com – A Chicago real estate company has landed another high-profile property Downtown. M&J Wilkow, as part of a joint venture with DRA Advisors, completed its acquisition Wednesday of 11 Stanwix St., a prominent 23-story office building that once housed Westinghouse Corp. Marty Sweeney, M&J Wilkow vice president, declined to disclose a sales price. The seller, Munich-based GLL Real Estate Partners, paid $66.6 million for the building in 2011. The price that the new owners paid is believed to be about $81 million. The acquisition gives M&J Wilkow side-by-side skyscrapers overlooking the Monongahela River. The firm also owns the 22-story 20 Stanwix Street office building directly across from 11 Stanwix.