The plight of the so-called "comfort women" who were forced into sexual slavery for Japanese troops during World War II is a hugely emotional issue that has marred ties between the US allies for decades.
Mainstream historians say up to 200,000 women -- mostly from Korea but also other parts of Asia including China -- were forced to work at Japanese army brothels across the region during the 1939-1945 conflict.
The "House of Sharing", in a rural area south of Seoul, has a memorial hall but Chung said the country needed a museum in the capital with better public access.
She did not elaborate on when it will open or what kind of materials it will display.
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Japan maintains that there is a lack of documentary proof that the women were forcibly made to work at the brothels.
Critics of the accord, including some survivors, say the deal did not go far enough in holding Japan legally responsible for wartime abuses during its 1910-45 colonial rule over the Korean peninsula.
Tension escalated further after South Korean activists refused to remove a statue of a girl erected in front of the Japanese embassy in Seoul to symbolise the victims of sex slavery.
Tokyo recalled its ambassador in protest in January, and he did not return for three months.
New South Korean President Moon Jae-In has repeatedly voiced criticism of the 2015 deal, suggesting a potential push by Seoul to renegotiate it.