Hilton Hotels Corp. may open as many as 10 Waldorf-Astorias around the world to take advantage of a growing demand for luxury rooms.

The company has received "some very significant and high-end inquiries" from developers interested in building additional Waldorf hotels, President Matthew Hart said in an interview Tuesday in New York.

Hilton announced last week the development of a Waldorf in Orlando. It will be only the second Waldorf in the world, joining the original in New York City.

Hilton is building the Waldorf brand to boost its share of the profitable luxury-hotel market, dominated by companies such as Four Seasons Hotels Inc. and Marriott International Inc.'s Ritz-Carlton. Rates for luxury hotel rooms have grown faster than any other segment since 1997, according to consulting firm PricewaterhouseCoopers LLP of New York.

The Beverly Hills, Calif.-based company has taken advantage of luxury-hotel growth with the creation of a new luxury line, The Waldorf-Astoria Collection. The group includes the original Waldorf and three other luxury hotels that do business under different names.

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