Hilton Hotels' plan to launch a luxury chain under its Waldorf-Astoria brand capitalizes on the colorful history of a distinctive hotel for Manhattan's well-heeled. Built by millionaire William Waldorf Astor in 1893, the Waldorf set many industry standards. The original Waldorf-Astoria was the first hotel to have electricity throughout, and private bathrooms in many of the rooms, according to the hotel. It was also the first to abolish a separate ladies' entrance, and first to introduce room service.

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