The "1000 won"

The "1000 won (1000 원) ", the correct pronunciation is "chon won"
In front of this bill is the Korean Confucian of the Joseon Dynasty, Yi Hwang (이황). Sungkyunkwan (성규관), also called Taehak (태학) also appears on the bill with Prunus mume, wich is an asian specie of tree, this flower usually called  plum blossom.
Reverse: Dosan Seowon (도산서원), this complex was created in 1574, today is in Andong, South Korea. This complex was built in honour of the confucian Yi Hwang.