The Fan Museum in Greenwich
Fan showing costumes worn at a Victorian costume ball on a Medieval Theme. This is of course the tip of the iceberg. For more pictures see the official site The Fan Museum: The World’s greatest collection of antique and modern fans
One thing you won’t see at their site, but must view in person is the amazing bathroom at the museum that won the “Loo of the Year Award” for 2002. It has a hand painted design of Chinese blue and white china and fans, educational reading material on the inside doors of the stalls, and more. This photo shows one tiny corner.