A water clock from the Joseon Dynasty has been restored after 570 years.

The National Palace Museum of Korea said Wednesday that it recreated the clock known as Ja-gyeok-ru in collaboration with researchers from Konkuk University. The clock will be put on display next Wednesday.

In 1434, the six-meter high water clock was invented by the famous Joseon inventor Jang Yeong-sil during the reign of King Sejong the Great.

Ja-gyeok-ru was the Joseon Dynasty's official timekeeper but it was destroyed by fire during the Japanese invasions of 1592.

A copy was made after that war but was damaged again during Japanese colonial rule that began in 1910. Only parts have remained.

Researchers rebuilt the Joseon invention based on the royal records of King Sejong the Great and other historical documents.