We used to live in this building but have since moved away. This area will always be the ❤️ of Seoul to us.
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.