For a weekend (May 28 & 29, 2011), the City of Toronto will be opening its doors to 150 buildings of architectural, historic, cultural and social significance to the public for a city-wide celebration. Visitors will gain free access to properties that are usually not opened to the public. Many locations have organized guided tours, displays and activities to enrich the visitor experience. Doors Open Toronto 2011 theme is “Photography & Architecture,” and I would guess this means photography is permitted?
Read more about the event at: Toronto.
source: Sweet & Loveable