It’s “ribbed for her pleasure,” isn’t it? I mean, if she was a giantess.
With a square-shaped orifice, perhaps.
I believe you and **WhyNot **are referring to different buildings. She appears to be talking about the Gherkin in London that Elendil’s Heir linked to earlier. It is a decidedly non-square shaped building.
And to the OP… no, I don’t think the LDS Church Office Building is particularly phallus shaped. And I really don’t think it was intended to be either.
So why does archetypical legislative seat of government building resemble a giant breast? Or, has society weaned itself off one structure shape in the last century only to fixate on another?
I’ll go along with “Sometimes a building is just a building.”
I’ve seen it in real life. The Mormon business office building isn’t phallic at all. Not even a little. Look, if you want Mormon phallic symbols go visit Brigham’s Unit. It’s in Southern Utah somewhere, probably Canyonlands. 
Yes, exactly, the one linked in the post I quoted.
The building in the OP doesn’t look phallic at all to me, not even in the general way in which most skyscrapers do. It’s far too wide for its height.
While driving to Yellowstone a few years ago, we went through Grand Teton National Park. Legend has it, of course, that the Grand Teton range was named after breasts (or perhaps nipples) by French explorers. Having seen these mountains, I can only conclude that said explorers were very lonely, and had not seen the female form in a iong, long time. 
Yeah, I was still working off the OP’s picture. 