The limestone building has a slate hipped roof.
It is rectangular with a projecting doric portico entrance and an extension to the rear.
The interior is laid out in a U shape, with the larger Ball Room and Tea Room along either side with the octagonal Card Room at the end.
The rooms have Whitefriars crystal chandeliers and are decorated with pictures by Thomas Gainsborough, Allan Ramsay (artist), Edwin Long and William Hoare.

The Ballroom has five chandeliers and capacity for up to 500 people.
It is over 100 feet (30 m) long and nearly 45 feet (14 m) wide.
The ceiling is 42 feet (13 m) high.
The Tea Room holds up to 250 people.
It was the location for a banquet attended by The Prince of Wales for the BBC television series the Great British Menu.
It is 60 feet (18 m) long and 42 feet (13 m) wide.
The Octagon is named for the shape of the room has four fireplaces.
It is 42 feet (13 m) across.
It originally held an organ in the musicians gallery.
In 1777 the Card Room was added.
This is now used as a bar.
The limestone building has a slate hipped roof. It is rectangular with a projecting doric portico entrance and an extension to the rear. The interior is laid out in a U shape, with the larger Ball Room and Tea Room along either side with the octagonal Card Room at the end. The rooms have Whitefriars crystal chandeliers and are decorated with pictures by Thomas Gainsborough, Allan Ramsay (artist), Edwin Long and William Hoare.
The Ballroom has five chandeliers and capacity for up to 500 people. It is over 100 feet (30 m) long and nearly 45 feet (14 m) wide. The ceiling is 42 feet (13 m) high. The Tea Room holds up to 250 people. It was the location for a banquet attended by The Prince of Wales for the BBC television series the Great British Menu. It is 60 feet (18 m) long and 42 feet (13 m) wide. The Octagon is named for the shape of the room has four fireplaces. It is 42 feet (13 m) across. It originally held an organ in the musicians gallery. In 1777 the Card Room was added. This is now used as a bar.
Bath Assembly Rooms