Standfirst: And its interiors underscore one of the most underrated dimensions of Gehry’s immense talent: a supple feel for context and an ability to balance exuberance with delicious moments of restraint.

Instead of tearing apart the old museum, Gehry carefully threaded new ramps, walkways and stairs through the original. As you step from one area to the next, it is as if you were engaging in a playful dance between old and new.

The original building, an imposing stone Beaux-Arts structure completed in 1918, grew in fits and starts over nearly a century. A wing designed to match the original style was added to the main building in the 1920s; a modern sculpture center and gallery shop, clad in precast concrete, were built in 1974.

The most damaging addition, however, was a two-story structure that the architect Barton Myers grafted onto the front of the old building on Dundas Street in the early 1990s. The addition’s low brick form was intended to make the museum more accessible but ended up looking cheap and tawdry. The central entrance was also moved off to one side, which meant that visitors had to pass through a labyrinth of spaces before reaching the heart of the museum.

Gehry’s first task was to clean up this mess:

He tore away that addition, restoring a grand, central point of entry.

He consolidated all of the museum’s commercial functions — bookstore, cafe, restaurant, theatre — at one end of the building, reasserting the primacy of the museum and its art while creating a vibrant communal enclave at that street corner.

The new glass facade, swelling out one story above the sidewalk, seems to wrap the building and embrace passers-by below. Its faceted glass panels, supported by rows of curved wood beams, evoke the skeleton of a ship’s hull or the ribs of a corset. At either end of the building, the glass peels back to reveal powerful crisscrossing steel and wood structural beams.

The unpretentious materials bring to mind one of Gehry’s most powerful early works: his own 1978 house in Santa Monica, Calif., which he described as “a dumb box” wrapped in a skin of chain link, galvanized metal and plywood.

All the old spaces and the memories they house are brought lovingly back to life.

Nicolai Ouroussoff

Yet an even greater strength of the museum design is how it suggests the interrelationship of art and the city. The bottom portion of the glass overhanging the street angles back slightly to reflect the facades of the pretty Victorian and Georgian houses across the way; the upper section tilts back to reflect the sky. Just above the glass facade, you glimpse the top of the new big, blue box that houses the contemporary-art galleries, its blocky form balanced on top of the old building.

The results are refreshing. Gehry doesn’t put art on a pedestal; he asserts its importance while wedding it to everyday life. The rest of the design unfolds in a meandering, almost childlike narrative. An exposed stud wall frames the entrance, blending into the classical stone shell while adding a touch of warmth. From here, a long sinuous ramp snakes its way through the centre of the lobby. The ramp, which provides wheelchair access but can be used by anyone, is an odd conceit. Yet it serves the purpose of slowing your pace as you move toward the galleries, prodding you to leave outside distractions behind.

As you travel deeper into the building, you experience a delightful tension between old and new. From the lobby you enter a court framed on four sides by the original museum’s classical arcades. A glass roof supported on steel trusses has been cleaned up, and on a sunny day a heavenly light pours into the space from two stories above.

At the far end of the court, a spectacular new spiralling wood staircase rises from the second floor, punching through the glass roof and connecting to the contemporary gallery floors in the rear of the building. The staircase leans drunkenly to one side as it rises, and the tilt of the form sets the whole room in motion. When you reach the first landing, the stair rail keeps rising rather than becoming level with the floor, so that your view back across the court temporarily disappears and then returns. It’s as if you were riding a wave.

This is a textbook example of how architecture can be respectful of the past without being docile. All the old spaces and the memories they house are brought lovingly back to life.