In April 2011 the Olympic Airways Museum opened in the West Terminal, including three airplanes that had been parked there since the airport's closure. The Athens radar center is still based at Ellinikon. After its closure the northwest portion of the airport was redeveloped, converting aprons into a sports park that housed the 2004 Summer Olympics venues for canoe and kayak slalom, field hockey, baseball, and softball. Other Olympics-related upgrades to the airport included refitting one of the airport's western hangars to become the main Olympic fencing venue and one of the larger Olympic indoor basketball arenas. In 2005, a team led by architects David Serero, Elena Fernandez, and landscape architect Philippe Coignet, won the competition to design a metropolitan park on the former site of the Ellinikon Airport over more than 300 other teams of architects. The competition was sponsored by UIA (International Union of Architects), the Greek Ministry of Environment, and the Organization for the Planning and Environmental Protection of Athens (ORSA). The project was further developed in 2006 and 2007 by this team through two development phases with the planning organizations of Athens. By 2012, government plans to attract investors and develop the site commercially were eclipsing the proposed park, though nearby communities remained vocal about their preference for a park. There was also another plan to turn the airport into a coastal resort. A large part of the airport is still derelict and not much has been done to change that. Many immigrants and refugees have set up camp at the former airport, much to the annoyance of the local population. Following is a list of accidents and incidents experienced by aircraft at Ellinikon. It only includes events that occurred at the airport or in its vicinity, and only deadly occurrences or hull-losses are listed.