Elysium is where the wealthiest of the Babylon City citizens live. To live in Elysium, you need to make more money than 99.999% of the rest of the population, or at least work for the 0.001%. Elysium residents often have their own security contingent as well as the most well funded police district in the city to protect them. Elysium's wealth has attracted many tourists to visit and breath in the rarefied air. The residents don't generally mind this as it just another way to show how much better their life is than those of the other people.