The Bank of England Museum will be taking part in the London-wide 'Museums at Night' event, when everything opens up at unusual hours.
All of the usual displays will be available, and there will be an extra presentation about banknotes.
Bank staff will also be on hand to answer all your questions about gold (but unfortunately they will not be giving out free samples).
Craig has been to the Bank of England Museum himself, and found it to be more interesting than he was expecting. It sounds like quite a dry museum on paper, but they've got some interesting exhibits about London's history too -- so it's not all about money. You can read his review on his blog.