NANNING, Feb. 26 -- China will build 13,000 new toilets and renovate another 9,000 in 2015 at tourist sites to upgrade the notorious facilities, tourism authorities announced on Thursday.

The campaign is part of China's three-year "toilet revolution" aimed at building a total of 33,000 restrooms and renovating 24,000 by 2017, said Li Jinzao, head of the China National Tourism Administration.

Li released the target at a national kick-off meeting, adding that insufficient and unhygienic toilets have damaged China's national image and left tourists unhappy.

The official urged local tourism authorities to consider the special needs of the elderly, women, children and disabled when building and renovating toilets.

Over 3.7 billion trips were made to China's tourist sites last year, and some 128 million were from overseas visitors.