Cinema Museum
A somewhat idiosyncratic but interesting museum with limited opening. It can only be visited on guided tours or screenings that can be booked by email or phone. The building is a former workhouse where Charlie Chaplin once lived.

A somewhat idiosyncratic but interesting museum with limited opening. It can only be visited on guided tours or screenings that can be booked by email or phone. The building is a former workhouse where Charlie Chaplin once lived.
Check the official site before travelling; hours and prices can change.
More museums

Sir John Soane's Museum
Free, tiny, deranged — Soane's own house preserved exactly as he left it in 1837.

The Wallace Collection
Free national museum in a Manchester Square townhouse — armour, Boucher, the Laughing Cavalier.

The British Museum
Free, vast, civilisationally heavy — go for one room, not all of them.
Source: wikivoyage