The Carpenter Center is Le Corbusier’s only building in North America, and one of the few modern buildings in Harvard Square.  It’s both conspicuous and invisible.  Set on a narrow, seventeenth-century block between two staid brick university buildings, it’s freakish and liberating.  It doesn’t feel like an institutional building and it doesn’t even feel like a building, really.  It feels more like a device for moving students in and out of its studios and galleries, a machine for coming and going.

The building is spectacularly porous.  It has no center; in plan it’s two lung-shaped volumes connected with ramps that pass all the way through and spin off centripetally to the sidewalks at each side.  Strangely, for a great modern building, there are no canonical photographs of it, and no single point of view from which you can see it as one whole thing.  Approaching it on the sidewalk, you see the ramp and one half of the building, or the building cleft into two dissimilar parts.  When I visited the Mill Owner’s Association Building in Ahmedabad I realized that Le Corbusier’s buildings, no matter how good they look from the outside, don’t lend themselves to one image.  Instead they generate images for the moving visitor cinematically, and, in the case of that building, spectacularly.  I could not leave the Mill Owner’s Building – I walked through it again and again.  At the Carpenter Center, where I spent time roaming the galleries, I felt as if I were leaving it and then entering it again and again.

If I had my own girl band I would call it The Glass Flowers, after the famous ones at the Harvard Museum of Natural History.  Two Dresden glass blowers, Leopold and Rudolph Blaschka, crafted about 4,400 of these teaching models, for nearly 800 different species, between 1886 and 1936.  The figures are uncanny in their fineness and faithfulness.  All of the tiniest parts – filaments, pollen, petioles, stipules – are there, translated into glass.  The effort that went into fabricating these models is mind-boggling.  The Blaschkas must have gone mad, or at least blind.

The models are accurate in fact but not in spirit.  There’s no doubt that all the parts of each plant are present and rendered with perfect accuracy.  In fact, the glass flowers seem more complicated and biological than real flowers.  But there’s something funereal about them.  They’re lying on their sides in low, dimly-lit glass vitrines, coated with a fine layer of dust.  And they’ve been painted with soft, matte colors, so that they don’t have the lush sheen of real plant parts, or even of glass.  Their lifelessness is especially noticeable with familiar varieties.  The daisy and the banana are at once real-looking and patently false.  If Robert Mapplethorpe’s photographs but the sex back in flowers, the Glass Flowers sucks the sex right out of them.  They’re fascinating and inert.

Like movies stars, buildings from our past are often smaller than we imagine.  That’s true of the ones in Cambridge, Massachusetts, where I attended architecture school.  I was visiting last weekend, seventeen years after I graduated, and the whole place felt much more welcoming than I remember.  It was a clear afternoon and the leaves, which had turned gold, set off the brick buildings and cloudless sky brilliantly.  I circled the Yard on streets barely wide enough for two cows to pass, with university buildings lined up along them just like in a storybook village.

But one building remained as large and looming, as truly monstrous, as I remember it – Sever Hall.  This undergraduate classroom building is a classic by the great nineteenth-century American architect Henry Hobson Richardson.  It sits back several hundred feet from the street, like a grounded ocean liner.  It’s grave and god-fearing, with an aspect of discipline and renunciation.  Its fortress-like brick facades are broken with small, deep windows and elaborate ornamental terracotta bands.  (What happened to these masonry traditions?  Did they simply vanish?)  I remember Cambridge as a place that offered no respite, imaginatively or physically, whose structures were arch and overbearing.  While the city no longer feels that way, Sever Hall still does.