EXHIBIT 21.1 List of Subsidiaries of the Registrant Subsidiary Jurisdiction - ---------- ------------ The Retail Property Trust Massachusetts Simon Property Group (Illinois), L.P. Illinois Simon Property Group (Texas), L.P. Texas Shopping Center Associates New York DeBartolo Capital Partnership Delaware Simon Capital Limited Partnership Delaware SDG Macerich Properties, L.P. Delaware M.S. Management Associates, Inc. Delaware DeBartolo Properties Management, Inc. Ohio Omits names of subsidiaries which as of December 31, 1998 were not, in the aggregate, a "significant subsidiary". 90