I'd have bases around my home city for interaction with my normal life.
For example:
1) Connects to my house. My family would want me around for special events like Christmas, wouldn't they?
2) Under my school. I'd want to go to school to maintain a disguise of normality. I'd use my powers to finish my homework instantaneously. Another good thing about going to school is that someone has (if only a little) power over me, hindering the development of a power complex, which would be nearly inevitable.
3) A center for meeting with normal humanity. This would allow the government of my country to make requests and proposals, which I could accept or deny.
4) A base under the parliament house in my city. With this building, I can interact with the government and have a secondary meeting area.