[4] It remained housing the treasury until the 19th century.5[1] Gold and silver bullion were stored at the Conservatoria, located opposite the Casa del Commun Tesoro.

[6] In 1708, Malta's first proper postal service was established, and a room within the Casa del Commun Tesoro became the island's first post office.

[6] In April 1921, Japanese Crown Prince (later Emperor) Hirohito was received at the Casino Maltese, while visiting Malta as part of a six-month tour of Europe.

[17] The building is scheduled as a Grade 1 national monument by the Malta Environment and Planning Authority.

The façade facing Republic Street contains a large sundial and calendar, which is unique in Malta.

[18] The interior of the building includes a decorated ceiling, a grand staircase and a central courtyard.