Gotham Hills Arena was a stadium located in Gotham City.
Long after the stadium closed down and became derelict, Inque and her caretaker Aaron Herbst used it as their hideout. Once there, they chained Batman and prepared the mutagen that returned Inque to her human form and that left Herbst as a misshapen creature. Knowing that his successor's life was at stake, Bruce Wayne donned his Bat Armor and went to rescue Batman but was easily defeated. Fortunately, a reformed Herbst came to their aid and distracted Inque long enough for Batman to break free and destroy the glass dome above them, letting in the rain and washing Inque away into the sewers.