<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from SEC Form
10-K and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<MULTIPLIER> 1000
       
                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               DEC-31-1997
<CASH>                                         109,699
<SECURITIES>                                         0
<RECEIVABLES>                                  202,163
<ALLOWANCES>                                    13,804
<INVENTORY>                                          0
<CURRENT-ASSETS>                                     0<F1>
<PP&E>                                       6,867,354
<DEPRECIATION>                               (461,792)
<TOTAL-ASSETS>                               7,662,667
<CURRENT-LIABILITIES>                                0<F1>
<BONDS>                                      5,077,990
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                    339,061
<COMMON>                                             0
<OTHER-SE>                                   1,912,238
<TOTAL-LIABILITY-AND-EQUITY>                 7,662,667
<SALES>                                              0
<TOTAL-REVENUES>                             1,054,167
<CGS>                                                0
<TOTAL-COSTS>                                  571,145
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                 5,992
<INTEREST-EXPENSE>                             287,823
<INCOME-PRETAX>                                203,133
<INCOME-TAX>                                   203,133
<INCOME-CONTINUING>                            203,133
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                     58
<CHANGES>                                            0
<NET-INCOME>                                   203,191
<EPS-PRIMARY>                                     1.08
<EPS-DILUTED>                                     1.08
<FN>
<F1>The Operating Partnership does not report using a classified balance sheet.
</FN>