The Lunatic Asylum

Influenced by the moon; varying with the changes of the moon. From Middle English lunatik, derived from Old French lunatique and Late Latin lūnāticus ‘moonstruck’, from Latin lūna ‘moon’.

A secure place of refuge, shelter, or retreat. From Latin asylum, via Greek asylon ‘refuge’, neuter of asylios ‘inviolable’, from a- ‘without’ + sylon ‘right of seizure’.