Recently, I happened to see a picture of the British House of Commons. It looked familiar to me, but the reason it looked familiar is that it seems to be the origin of the design for the Separatist Parliament in an episode of
Star Wars: The Clone Wars. Senator Amidala visits Mina Bonteri, an old friend of hers who is now a Separatist senator, and convinces her to make a motion for peace talks in the parliament:
Like the British House of Commons, there's the same layout (slightly modified), a fair amount of spires in the design, and green benches.
I don't think the similarity in design is meant to imply any connections, but I found it interesting that such an old building seems to have been the basis for a science fiction setting.