How much capital do you need to start a REIT?

Good day, I'm curious about the initial capital requirements for starting a Real Estate Investment Trust (REIT). Could you elaborate on the financial outlay one typically needs to undertake such an endeavor? Additionally, are there any minimum investment thresholds or asset under management benchmarks that potential REIT managers should be aware of when initiating this type of business venture? I'm keen to understand the overall financial landscape associated with setting up a REIT.