Celebrity Cruises is a premium cruise line which was founded in 1988 by the Greece-based Chandris Group. In 1997, Celebrity Cruises Ltd. merged with Royal Caribbean International to become Royal Caribbean Cruises Ltd., which operates Celebrity, Royal Caribbean International, Azamara Club Cruises, Pullmantur Cruises and CDF Croisières de France. The signature "?" displayed on the funnel of Celebrity ships is the Greek letter chi, for "Chandris". The company has its headquarters in Miami, Florida. Common features on board Celebrity brand ships feature aft-glass dining rooms, formal foyer areas, alternate dining venues, balcony and suite staterooms, pools and lounging areas, bars and lounges, libraries, spas and gyms, and relaxation areas. Celebrity Cruises was founded in April 1988 as a subsidiary of the Greece-based Chandris Group to operate upmarket cruise ships to Bermuda. Chandris had been involved in cruise traffic since the 1960s, and during the late 1980s the company operated in the United States market under the brand name Chandris Cruises. Chandris Fantasy Cruises targeted the lower end of the cruise passenger market, with fleets consisting of second-hand ocean liners. Celebrity Cruises came into existence when, in April 1988, Home Lines, at the time one of the worlds leading premium cruise lines, was sold to Holland America Line. Home Lines' ships had held two of the five contracts offered by the Government of Bermuda to cruise lines, giving the ships priority berthing arrangement and unlimited access of sail to the islands in exchange for the ships sailing to Bermuda between April and October each year. Although these contracts were highly valued, Holland America Line decided to withdraw the former Home Lines ships from this service, leaving an opening for two new ships to gain access. Chandris wanted to acquire the contracts, but the Government of Bermuda was only willing to award them to upmarket cruise lines, which Chandris Fantasy Cruises was not. In order to gain the Bermuda Government contracts, Chandris created Celebrity Cruises and immediately began negotiating with the Bermuda Government in April 1988. As a result of the negotiations, Celebrity Cruises was awarded the contract for two ships for a five-year period beginning in 1990 In order to fulfill the contract, Chandris Fantasy Cruises' Galileo was rebuilt at Lloyd Werft, Germany in 1989, re-entering service as Meridian for Celebrity Cruises in February 1990. As the second ship Horizon, that had been ordered in 1988 as a replacement for Amerikanis in the Chandris Fantasy fleet, was transferred to Celebrity Cruises fleet, entering service in May 1990. In late 1990 Celebrity Cruises placed an order for a sister ship of the Horizon, delivered in 1992 as Zenith.