<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<RESTATED>
<MULTIPLIER> 1,000

<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   3-MOS                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1997             DEC-31-1997
<PERIOD-START>                             JAN-01-1997             APR-01-1997             JUL-01-1997
<PERIOD-END>                               MAR-31-1997             JUN-30-1997             SEP-30-1997
<CASH>                                         107,185                 102,844                  83,453
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                                      998                     839                     817
<ALLOWANCES>                                         0                       0                       0
<INVENTORY>                                          0                       0                       0
<CURRENT-ASSETS>                               109,160                 104,670                  90,005
<PP&E>                                          54,110                  56,858                  62,724
<DEPRECIATION>                                  12,975                  16,235                  19,887
<TOTAL-ASSETS>                                 405,140                 383,631                 375,754
<CURRENT-LIABILITIES>                            8,622                   7,925                   8,694
<BONDS>                                        258,767                 266,039                 273,512
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                            11                      11                      11
<OTHER-SE>                                     112,217                 100,029                  85,934
<TOTAL-LIABILITY-AND-EQUITY>                   405,140                 383,631                 375,754
<SALES>                                          6,678                   6,822                   6,746
<TOTAL-REVENUES>                                 6,678                   6,822                   6,746
<CGS>                                                0                       0                       0
<TOTAL-COSTS>                                   14,095                  14,321                  15,326
<OTHER-EXPENSES>                                     0                   (655)                     392
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                               7,996                   8,093                   7,863
<INCOME-PRETAX>                               (13,963)                (13,505)                (15,456)
<INCOME-TAX>                                   (1,357)                 (1,357)                 (1,358)
<INCOME-CONTINUING>                           (12,606)                (12,148)                (14,098)
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                  (12,606)                (12,148)                (14,098)
<EPS-PRIMARY>                                   (1.21)                  (1.14)                  (1.32)
<EPS-DILUTED>                                   (1.21)                  (1.14)                  (1.32)


</TABLE>