The arena is a triangle, approximately two thousand yards on a side. The domed roof blends into a rimwall panoramagram, but appears to be at least one thousand yards high. The sky is dark purple. Visibility is excellent; the air is thin and clean. The arena floor is a three-sided crater, with the sides sloping at a very steep angle from the rimwall to the arena floor. The rimwall contains about a hundred Ready Rooms, each between 30 and 40 yards wide by as much as sixty yards deep. Ready Room doors open directly onto the Arena floor.
The total relief is approximately 75 yards (from rimwall to the Lagoon). Topography includes the rocky rimwall, grasslands, a forest, a freshwater lagoon, and a small ruined city.
The grasslands consist of prairie-like flatland, covered with a mossy red sward. Cover and relief are minimal. Occasionally, the partially buried, bleached bones of very large animals can be seen.
The forest is thick, seemingly impenetrable hardwood, with 20-yard tall trees very closely spaced. There is little ground cover. Appetizing fruit grows on the purple-leafed trees, and ripe fruit is available on the ground. No animals are present in the arena.
The Lagoon appears to be less than a yard deep, and is in constant, bubbling motion, as if stirred by an unseen mechanism. Along the shore, the grasslands are separated from the water by a clean sand beach.
The ruined village appears to be approximately 100 by 200 yards. It is partially surrounded by three yard high, one yard thick sapphire-colored, metal walls. There are four rose-colored multi-story towers at each corner. Two appear nearly undamaged. One tower is covered with acid burns and the other is a fallen wreck. In the center of the ruin is a white marble dome, approximately 40 yards wide. A large portion of the dome's roof has caved in. There is a ten yard wide fountain, faced by two crystal temples. There are no paths or streets, just open, undeveloped spaces between structures. These spaces appear to be covered with grey concrete. There are piles of multi-colored rubble everywhere.
Groups that rent the Arena often add additional structures, decorations, or even terrain. Of course, these additions are always of a temporary nature.