The top floor of the Cork City Gaol now houses a radio museum. After the prison was shut, the top floor of the Governors house was used as a radio broadcasting station by 6CK, the first official radio station in Cork, Ireland.

Nowadays it is a radio museum and I learnt about Morse Code:

• Morse Code is just dots and dashes that are hammered out
• Each letter of the alphabet is given a different combination of dots and dashes.
• S is three dots, O is three dashes, so famously SOS is …—…