In the 1960s and 1970s, while other inner-city suburbs were experiencing gentrification, East Melbourne, traditionally a blue ribbon district, experienced a temporary decline. Flats began to appear and replace many of the old mansions. Many remaining mansions had been converted to rooming houses over the years. The construction of the Hilton Hotel saw the demolition of "Cliveden" mansions, a five-storey Victorian era terrace and the largest mansion in Melbourne (a small section of the panelling, doors and other decoration of the ballroom is retained in the formal restaurant of the Hilton). Office development and expansion of the hospitals in the area affected much of the area surrounding Victoria Parade.