Sandals is set to pump millions of dollars into revamping its Royal Bahamian spa resort and offshore island in Nassau.
More than 200 rooms and suites are set to be redesigned, while new features and facilities include the addition of river suites.
The resort will be closed while the works take place, and is due to reopen from 4 November in time for the winter season.
Sandals said the renovation formed part of its plans to celebrate the 25th anniversary of its operations in the Bahamas.
"Sandals Royal Bahamian has a storied past and played a starring role in the history of Bahamian tourism, hosting rock stars and royalty and we pledge our continued commitment to this captivating island," said Sandals Resorts International executive chair Adam Stewart.
Stewart added: "We honour and celebrate our partnership with this great destination looking forward not only to reopening this fall, but to the future, when together, Sandals and the Bahamas will continue to exceed our guests’ expectations."
Guests with reservations at Sandals Royal Bahamian during its closure will be offered alternative options, or will be able to delay their holiday. Guests who booked in the UK can also claim a full refund, if they wish.