He wears a hat to protect his bald 'dome' from the summer sun.
The team's new stadium is a 'dome'.
the 'dome' of the Capitol building
(..) A year ago, it seems like... - Diz, terrible things are happening. - They're listening to him now. Just get up off the ground. Get up there with that lady on top of the Capitol dome, - - that lady that stands for liberty. Take a look at this country through her eyes. You won't just see scenery. (..)1939 Mr. Smith Goes to Washington