In its classic sense, "classics", when used as a singular noun, means the study of the language, literature, history, art, and other aspects of ancient Greece and Rome. As a plural noun "classics" are books written in ancient Greece and Rome.
... History Museum[?]
Science Museum
Tate Gallery: Tate Britain and Tate Modern
Victoria and Albert Museum
Merseyside
Customs & Excise National Museum[?]
Historic ...