O One of the biggest urban recreation areas in Jakarta today is Ancol dreamland (Taman Impian Jaya Ancol), which has various recreation families. One of those facilities is Ocean Arena (Gelanggang Samudera). Gelanggang Samudera occupies an area of 18 Ha giving a great number of hi-tech, attractive and challenging games. Besides, there are many amazing animal attractions in Gelanggang Samudra.In managing exterior trace by visualizing strengths and weaknesses as the underlying consideration of developing landscape design special in characteristics. Developing exterior spatial function, its focuses are on both passive and active recreation facilities oriented to now and future. Design result is formed by a regular design concept consisting of spacing, circulation, shape, vegetation, coloring, and materials and utility concept. All of them are summarized and manifested by the existing situation and games.Spatial divisions of Gelanggang Samudera are grouped into three zones, that is accepting zone of sea reefs; recreation zone of undersea world, coast forest, fantastic and dinosaur island; and service zone of bnd area and dinosaur island.Situation arrangement D create is fantastic with distinctive adventures in every sub-area. We see them in paving, lighting, park building rubbish area and coloring spatial form.