de_arboretum entails a small visitor's center and surrounding area. The CTs start near the security desk and the Ts in the bathroom. The layout is that of a figure eight, with bits of foliage and such for cover. Glass doors separate the areas. The two bombsites are littered with cover, making them defendable by both T and CT forces.

Gameplay is moderately paced, with team strategy being the key to a win.