Free entrance museum for money and monetary systems. Nice, compact, comprehensive and informative. Most enjoyable though for smaller ages interested to learn how bank system works and how money are issued - diddn't feel that extra that I was expecting. Fun part; have your first (I suppose soo) closeup to a real gold bar - put your hands on it and have your fisrt (and last I suppose again) feeling on how a gold bar is. Unlike to most London's museums, it is open only weekdays up to 17.00, so if you are working full time seems a bit difficult to be able to pay a visit.