Municipal bucrania

Bucrania are old Roman symbols depicting the garlanded skulls of oxen sacrificed during feasts. I've walked or driven past the the Municipal Building in Hyde Park for years, but I never noticed until yesterday that it has four of them up above the main entrance (you'll have to look way up to spot them).

Although some would argue they're a reference to a pre-Roman fertility goddess (look at their shapes for a moment), I'm betting the building's architect was simply looking for something classical to go with the columns at the front of the building - just like the architects of older office buildings downtown, who festooned their work with everything from caduceuses to depictions of Neptune to, yes, a bucranium or two.