What do I call a semi-circular concrete platform in my back yard that looks like a stage. It is about 30 inches above my grass lawn and is attached to my rear wall and appears that it could be a band stage. We currently use this as a conversation/fire pit area and it is always difficult to describe to someone who has not seen it. Photo attached:
I reckon I'd ask my guests to join me on the bandstand.
Although, clearly, it cannot be a functioning bandstand as currently furnished, the OP says that "it could be a band stage", and it is a sociable location ("a conversation/fire pit area").
A fun, whimsical name, such as the bandstand seems more appropriate to the OP's request than anything more architecturally accurate.
It looks like a dais :
- a raised platform in a large room or hall that people stand on when performing or speaking to an audience.