I want to add an attractive greenhouse off my kitchen.?

Any sites that offer such a thing? I want to have a kitchen garden year round plus maybe a table and chairs in there for dining in the winter. I would like it to look like a 4 season room but be practical as well. I’m looking for something large like 1,500 square feet. Has anyone ever put a BBQ or fireplace in one?

Question posted courtesy of: Portable Mini Greenhouses