Which British government building looks the most interesting?

The Houses of Parliament are a well-known tourist attraction in London. But the other British nations have their own main government building (I'm including Ireland in this). Most of you won't be aware of the buildings but which one do you think looks the most interesting.
Stormont, Belfast
Leinster House, Dublin.
Holyrood, Edinburgh
The Senedd, Cardiff.
Select gender and age to cast your vote:
Which British government building looks the most interesting?
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