This is our first time to place a geocache. We live in the apartments right by GZ (we can see the location of the cache from our dining room window), so I'll be able to maintain the cache well.
You can take the bus to this cache. Bus 401, 406, 143 and 03 (Namsan circle bus) all stop within 100 meters of GZ.
You'll have a nice view looking up at Seoul Tower from GZ. If you're on your way to Namsan, use the nearby underpass to cross the street.