He directed the construction of the Palace of the Parliament in Bucharest, which broke ground in June 1984. It was previously called The House of the People and The People's House. The building of the Palace of the Parliament was the most extreme expression of the systematization program imposed by Nicolae Ceaușescu upon Romania. The systematization was a program of urban planning carried out by Ceaușescu. The main architect of the building was Anca Petrescu (1949-2013), who began her work on this building when she was 28 years old. The building was completed in 1997, after Ceaușescu's death in 1989. Since 2004 the Romanian Senate has been headquartered in the Parliamentary Palace and was originally housed in the former building of the Central Committee of the Romanian Communist Party. The building has 1,100 rooms and is the largest civilian government building in the world as measured by volume in one continuous structure. (There are private sector buildings, mainly for the construction of aircraft that have more continuous volume in one building, such as the Boeing Everett Factory in Everett, Washington; see the List of largest buildings#Largest usable volume.) Much of the building remains empty, being larger than the Parliament needs, though Parliament shares it with three museums and an international conference center. It is also the heaviest building in the world, being constructed of 700,000 tonnes of steel and bronze, a million square feet of marble, and large amounts of crystal and wood.