Ten of the best museums in literature

At the Guardian, John Mullan named ten of the best museums in literature.

One entry on the list:
The Murder Room by PD James

A perfect, suitably gothic, scene for murder, the Dupayne is small, family-owned museum on the edge of Hampstead Heath, threatened with closure. It is devoted to memorabilia of England between the wars. Its "murder room" is devoted to the most famous murders of the period