Hi,
It's very close near dongdeamun market, in fact from dong deamun station, take exit 6, walk south till you see the channel they have renovated, then turn left, and go over the shoe market, (lots and lots of shoes but thats a differnt story) keep walking and you will get to the aquarium aerea, you can't miss it...
Yonsu, you live in Korea or just visiting from time to time?
It's very close near dongdeamun market, in fact from dong deamun station, take exit 6, walk south till you see the channel they have renovated, then turn left, and go over the shoe market, (lots and lots of shoes but thats a differnt story) keep walking and you will get to the aquarium aerea, you can't miss it...
Yonsu, you live in Korea or just visiting from time to time?