The Training Dome

The Training Dome is placed in the very centre of the entire Guild. Several floors tall, with balconies for observators at each floor, round room finished off with a glass dome, hence the second part of the name. The first part comes from the invisible technology hidden in the walls affecting the entire room, and a small console room placed at the height of the first floor. Inside it are several white computers and panels, all available to the Guild members - as long as they insert their ID into a special slot. Outside people probably shouldn't play with that. Different panels control conditions of the ground (Whether it's rocky, a desert, a city, wooden floor or even a lake), the weather, ranging from a slight breeze to the extremes, the time of day, year, place, air conditions and even generating a fake crowd to meander in or zero gravity imitating conditions.
   With all of the control, any hero can create a training field just for himself to try his limits in extreme conditions - or he can challenge a rival to a friendly battle without risking destroying half a real city, but still receiving real punches.
   Either way, it's probably a fun thing to play with. Try not to break anything, ok?