This room was originally the Principal Surgeon’s Quarters within the Rum Hospital. It was later converted to a meeting room for the Legislative Council, which first met in this room on 21 August 1829. This marked the beginning of the building’s legislative function, which has continued to the present.

In 1843, the Legislative Council moved to the first chamber (now known as the Legislative Assembly Chamber), and this room was used as a committee room and later, a library.

This room is painted pink to signify its original use by the Legislative Council.

Original wall decoration imitating wood panelling was also uncovered in 2011 and can be seen today.

In 2023, a window was fully revealed after being bricked over for decades.

This room has returned to its original proportions by raising the ceiling to the original height, levelling the floor with new flooring and installation of improved lighting, and new air conditioning. The conservation has enabled the original window shutters to be used once again.

This room was named after William Charles Wentworth (1790-1872) in honour of his contribution to the development of New South Wales. Wentworth served on the Legislative Council for 13 years between 1843 and 1862. He played a leading role in drafting a constitution for New South Wales, which granted the colony self-government in 1855.