South Korea is one of few countries where tap water is drinkable. Waterworks Museum is holding an exhibition showcasing how the country achieved such a feat. The exhibition, titled "Waterworks of Seoul in Its 100-year-long History," is an opportunity for visitors to learn about the history of water purification in Seoul. The highlight of the exhibition is the very first water conveyance chamber of Korea, which bears a bullet hole marking from the Korean War, signifying the long history of waterworks. Visitors can also enter Korea's first slow filter chamber, which was in use from 1908 to 1990. The museum provides leaflets and descriptions in English, making it accessible to visitors from all over the world. Located in Seongdong-gu, near Seoul Forest, the Waterworks Museum is open from Tuesday to Sunday every week, from 9 a.m. to 6 p.m. Visitors do not need to make reservations or pay any entrance fees to visit the museum.