Where should MPs sit while the Houses of Parliament are repaired?

The Houses of Parliament are in a state of disrepair . The problem is so bad, it seems, that MPs representing the House of Commons commission say the best policy is to decamp to an alternative venue while work is carried out. Suggestions include the Olympic park, or indeed another city altogether. Where do you think we should put MPs? Are there any grand, disused buildings that fit the bill? Could space be made in a magnificent town hall somewhere? Or would a shopping mall be more in tune with the spirit of our times? Given the need to be seen to be austere in hard times, perhaps we should be thinking of somewhere distinctly unglamorous? Let's hear your suggestions.