Garnier opera house in paris project?

Question

for french class me and my partner have to a project about the garnier opera house in paris. our teacher told us to think of some questions and answer them. some questions like"

who made it and what year

location

and stuff like that. but i can't think of other questions to answer. can you please help?

Answer 1

What famous novel is set in the Opera?

What is its official name?

Despite its official name what is the name of the building as displayed above the entrance?

What role did Baron Haussman play in the building of the Opera?

What is the architectural style of the Opera?

What unusual thing is under the Opera building?