Bethlem Royal Hospital

The Bethlem Royal Hospital is a hospital for the treatment of mental illness located in London, United Kingdom and part of the South London and Maudsley NHS Foundation Trust. Although no longer based at its original location, it is recognised as the world's first and oldest institution to specialise in mental illnesses. It has been variously known by various names including St Mary Bethlehem, Bethlem Hospital, Bethlehem Hospital and Bedlam.

More information on the Wikipedia page.