change with many of the surrounding buildings being renovated. After the political turnaround in the wake of the fall of the Berlin Wall, socialist urban planning and architecture of the 1970s no longer corresponded to the current ideas of an inner-city square. Investors demanded planning security for their construction projects. After initial discussions with the public, the goal quickly arose to reinstate 's tram network for better connections to surrounding city quarters. In 1993, an urban planning ideas competition for architects took place to redesign the square and its surrounding area. In the first phase, there were 16 submissions, five of which were selected for the second phase of the competition. These five architects had to adapt their plans to detailed requirements. For example, the return of the Alex's trams was planned, with the implementation to be made in several stages. The winner, who was determined on 17 September 1993, was the Berlin architect . 's plan was based on Behrens’ design, provided a horseshoe-shaped area of seven- to eight-storey buildings and high towers with 42 floors. The and the – both listed buildings – would form the southwestern boundary. Second place went to the design by and . The proposal of the architecture firm Kny & Weber, which was strongly based on the horseshoe shape of Wagner, finally won the third place. The design by was chosen on 7 June 1994 by the Berlin Senate as a basis for the further transformation of . In 1993, architect 's master plan for a major redevelopment including the construction of several skyscrapers was published. In 1995, completed the renovation of the . In 1998, the first tram returned to , and in 1999, the town planning contracts for the implementation of and 's plans were signed by the landowners and the investors. 21st century On 2 April 2000, the Senate finally fixed the development plan for . The purchase contracts between investors and the Senate Department for Urban Development were signed on 23 May 2002, thus laying the foundations for the development. The CUBIX multiplex cinema (CineStar Cubix am Alexanderplatz, styled CUBIX), which opened in November 2000, joined the team of Berlin International Film Festival cinemas in 2007, and the festival shows films on three of its screens. Renovation of the department store began in 2004, led by Berlin professor of architecture, and his son . The building was enlarged by