Chicago Investment Company Redoes Office in Wenge and Mahogany. Suite Investment. l ocated in the historic Wrigley Building in downtown Chicago, Mason Avenue Investments is the new headquarters for a privately held investment company. Operating for approximately 10 years, Mason Avenue Investments is is home to two financial experts who recently renovated the space as a quietly elegant office that could adapt to the future needs of an evolving business. fall 2017 I designsolutions 25