The temporary casino was designed by architect Paul Steelman. It would be managed by the Las Vegas-based Millennium Management Group. In December 1997, Archer selected the Greektown proposal, along with the Atwater project (ultimately opened as MotorCity Casino Hotel) and the proposed MGM Grand Detroit. Construction of the casino began in January 1999. It incorporated Trappers Alley, a vacant shopping center owned by Gatzaros and Papas, together with a new building. Costs of the casino, originally estimated at $115 million, increased to $200 million. Ownership of the casino was to be split with 50 percent owned by the Sault Tribe, 40 percent by Gatzaros and Papas and their wives, and 10 percent by a group of local black investors. However, gaming regulators found problems during Gatzaros and Papas's background checks, and they were effectively forced to sell their shares. Negotiations were held with potential buyers including Millennium Management, Harrah's Entertainment, MGM Grand, and Park Place Entertainment. Advanced talks were held on selling the shares to a group of union pension funds. Ultimately, the tribe bought out the Gatzaroses and Papases' shares for $275 million, to be paid over 10 years. The casino licensing was approved in September 2000, with the tribe owning a 90 percent stake. The Greektown Casino opened on November 10, 2000, following the two other casinos that opened the previous year. The tribe ended its management deal with Millennium in 2002 and assumed direct control of the casino. Development of the city's permanent casinos was delayed for years by protracted negotiations over the casinos' locations, and by a lawsuit over the constitutionality of the casino licensing process. In 2002, Greektown agreed with the city to build its $450-million permanent facility on an site at Interstate 375 and Gratiot Avenue. In 2005, however, Greektown announced that it would expand at its current location instead of building a new facility. The $200-million expansion would include a 400-room hotel, a parking garage, convention space, and more gaming space. In June 2006, site preparation began for the hotel. A city-owned parking garage was demolished to make way for redevelopment. Construction began in October 2006. The hotel tower rises 344 ft. (105 m.) with 30 floors. It opened November 15, 2007, and included a new 13-story, 3,500-space, free parking garage. In November 2008, of additional gaming space was completed and opened over Lafayette. Total gaming space comprised . An expanded and re-designed