Manchester Town Hall is throwing open its doors to the public on Sunday as part of its third heritage open day.
The Gothic building opened in 1877
All of the state rooms, committee rooms and the council's chamber will be open from 1030 BST until 1600 BST.
The building opened in 1877 and is considered to be a masterpiece of Victorian Gothic architecture.
The triangular building was designed by Alfred Waterhouse, constructed with 14m bricks, and attracts 20,000 visitors each year.
Blue badge guided tours will take place throughout the day.
Visitors will be able to see murals painted by Ford Maddox Brown in the Great Hall.
Councillor Paul Murphy, executive member for direct services, said: "Manchester Town Hall is the jewel in the city's crown.
"It is a magnificent piece of architecture with a colourful history and it is only right visitors can still appreciate it."