An event like the Red Feast could only take place in the First Ring. It was the center of the Citadel, where everything could be found.
Obviously, in a place where millions of people lived, a black market naturally developed, and the Red Feast was an event for that audience.
Oddly enough, Red Feast was held deep underground, at the bottom of a museum that closed as soon as the sun went below the horizon. In the morning, people came here to see interesting things, most of which involved monsters, the rare and most unusual of them.
Sure, the truly unique monsters, their bones and parts, were kept in the research department or by scientists, but that was more than enough for ordinary people.
However, Adam and Silvana drove not directly to the museum, but to a restaurant a few streets away. There was an underground parking lot under the restaurant's control, and that's where they started.