<ARTICLE> 5
<LEGEND> This schedule contains summary financial information extracted from 
the Consolidated Balance Sheet and Statement of Operations and is qualified in 
its entirety by reference to such financial statements. 
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                         DEC-31-1998
<PERIOD-START>                            JAN-01-1998
<PERIOD-END>                              JUN-30-1998
<CASH>                                        265,915
<SECURITIES>                                        0         
<RECEIVABLES>                                   5,127
<ALLOWANCES>                                        0
<INVENTORY>                                         0
<CURRENT-ASSETS>                              468,669 
<PP&E>                                      7,968,121
<DEPRECIATION>                              (573,359)
<TOTAL-ASSETS>                              8,000,039
<CURRENT-LIABILITIES>                         279,407
<BONDS>                                     3,378,860
<PREFERRED-MANDATORY>                               0
<PREFERRED>                                 1,041,700
<COMMON>                                            0
<OTHER-SE>                                  3,300,072
<TOTAL-LIABILITY-AND-EQUITY>                8,000,039
<SALES>                                       584,381 
<TOTAL-REVENUES>                              593,391
<CGS>                                               0         
<TOTAL-COSTS>                                 219,504 
<OTHER-EXPENSES>                               10,271
<LOSS-PROVISION>                                    0
<INTEREST-EXPENSE>                            106,926
<INCOME-PRETAX>                               122,540
<INCOME-TAX>                                        0
<INCOME-CONTINUING>                           122,540
<DISCONTINUED>                                 11,092 
<EXTRAORDINARY>                                     0
<CHANGES>                                           0 
<NET-INCOME>                                   90,248
<EPS-PRIMARY>                                     .86
<EPS-DILUTED>                                     .85