The Roy Thomson Hall is the home of the Toronto Symphony Orchestra and the Toronto Mendelssohn Choir. Opened in 1982, its circular architectural design exhibits a sloping and curvilinear glass exterior. It was designed by Canadian architects Arthur Erickson and Mathers and Haldenby. The hall seats 2630 and features a pipe organ built by Canadian organ builders Gabriel Kney of London, Ontario.

The hall was formerly known as New Massey Hall. It acquired its current name from the family of Roy Thomson (first Lord Thomson of Fleet and founder of the publishing empire Thomson Corporation) who had donated $4.5 million (Canadian dollars) to complete the fund-raising efforts for the new hall. The hall was renovated over a period of six months in 2002, after years of complaints from musicians about the quality of its acoustics.

The hall is one of the main venues used by the Toronto International Film Festival, with many gala screenings held there each year. The concert hall was used in scenes of the film X-Men.

Filmmaker Jeffery Klassen's 2005 film, Toronto Architecture, interviews Arthur Erickson about the structure. Erickson talks of the point of the grey structure being that of a container which people were to fill up with their own decorations. The pond was originally designed to be used as a skating rink in the winter. The building was influenced by Erickson's journeys in Japan and his relationship with the North American Aboriginals.