A decade-by-decade historical look at photos of Toronto offers a glimpse of the various developments and transformations of a city that's often been accused of having a troubled relationship with its past.
Looked at over a span of more than a century, the growth and development of Toronto over the years is breathtaking and reflects major changes in technology and transportation as well as major local and world events.
In some decades, the city is unrecognizable compared to today.

1856.

Armstrong, Beere and Hime panorama, 1854.

House of Providence (lost to the DVP's Richmond off-ramp)

Provincial Lunatic Asylum (999 Queen West)

The view from St. Lawrence Market

Toronto City Hall 1868

Front and Wellington streets (Coffin Block)

The Crystal Palace (lost to fire)

King and Yonge streets looking east

Grand Opera House

Toronto Harbour

Horse-drawn streetcar

The Yonge Street Arcade

Old Union Station (a.k.a Union Station II)

Queen's Park (provincial Legislature)

Knox College

Track work for electric streetcars

Board of Trade Building (lost to demolition)

Celebrating the end of the Boer War (Yonge Street)

The Fire of 1904

Diving Horse at Hanlan's Point

City Hall and Terauley Street (now Bay Street)

Looking West along Front Street (Old Union Station in the background)

Arrival of Immigrants at (Old) Union Station

Looking southeast from Richmond and Bay streets

Soldiers leave for war at (Old) Union Station 1914

Excavating the site for New Union Station (Queen's Hotel in the background)

Bloor Viaduct nearing completion

299 Queen Street West in 1919

Muddy Mount Pleasant Road

Queen and Bay streets

Brand new Royal York Hotel 1929

TTC Bus

Yonge and Lawrence

Yonge Street Mission during the Great Depression

South of City Hall

Carlton and Yonge (prior to re-routing)

Air Ship and Canadian Bank of Commerce Building

Canada Life Building and Osgoode Hall

Looking up Bay Street (City Hall in background)

Maple Leaf Gardens 1934

Christie's Wartime ad

Imperial Bank of Canada Building

Streetcars in front of Union Station

Sunnyside Pool and Beach

Wartime factory work

Subway construction begins 1949

Subways arrive at Toronto Harbour 1953

Dundas Station

Interior of a subway car

Skyine in 1959

Letros Building

Bay and Wellington

Nathan Phillips Square

Steinbergs

Skyline

Approaching Yonge and Bloor

CN Tower construction

The Gooderham/Flatiron Building

Carlton Line

City Hall 1973

Toronto Star Building 1976

Skyline and bus

The Manulife Centre

The Monorail (Toronto Zoo)

Ontario Place

Bellair Street

Exhibition Stadium

Skydome

Skyline

Yonge and Dundas

Chinatown

Queen West

The Royal York
See additional photos from each decade here:
Toronto Archives. Photos up to the 1980s were sourced from the Wikimedia Commons and the Toronto Archives, with the exception of the lead image, which was originally published in Time Magazine and the skyline shot from the early 1960, which appeared in National Geographic. Credits for photos from the 1990s are as follows: billcummins, cliffordstead, Olga S, CanadaGood, nothingtoseehere, and also nothingtoseehere.