Dongmun market place, literally means a market at east gate, is one of the most popular traditional market in Jeju island. It was established after the liberation in 1945. Due to a huge fire that broke out in March 1954, the whole market and the nearby area were turned to ashes. Then the market moved to its current location and kept the original name.
Here you can buy local & fresh harvests (grains & veggies), meat, fishes (one of my favorite is Sashimi) and etc etc at inexpensive prices. There are approximately 300 shops selling lots of different stuff.
Mostly, they open at 9 AM and closes around 8 PM everyday.
This should be one of MUST VISIT place if you come to Jeju island and would like to feel local.