Looks like the AT&T building in downtown Mpls

Is that your final answer? he said, mysteriously.

Yes, that is my final answer, well no wait, it's not exactly called the AT&T building since the Bell breakup. It's called Quest Building
Formerly: U.S. West Building
Formerly: Northwestern Bell Telephone Building
Designed by Rhodes Robertson of the Minneapolis firm of Hewitt & Brown.
Construction Completed: 1932
Cost: $3,000,000
Stories: 26
it originally stood 346 feet tall, but grew to 416 feet with the addition of the rooftop antenna structure/penthouse in 1958, to the designs of Magney, Tusler & Setter.

address: 224 Fifth Street South

1958 - The antenna array is added to the roof, replacing an American flag.

1984 - This building is added to the National Register of Historic Places.

Before the current building was erected in the 1930's, there was already a Northwestern Bell building on this site. It was stripped to its steel frame, and incorporated into the current building.

That's my final answer.

Seeing what looks like the (old?) Pillsbury HQ bldg in reflection, and only bieng able to conjur up one spooky looking nearby structure in that area, I'll go with...

Minneapolis City Hall?

Stalactites are "tight" to the ceilings, while stalagmites "might" make it to the ceiling.

Someone had to do it . . . ideally, someone who's led cave tours, and trained new cave guides! That's the best mnemonic i've ever found.

I don't know where they are, but the photos upside-down.

The mnemonic I always used is that "stalagmite" had the 'g' in it. 'G' for 'ground'.

"Stalactite" has the 'c' in it. 'C' for 'ceiling'.

Hardly. The best mnemonic for which way stalactites go is to merely remember that t*ts hang.

Or:
StalaCtites grow from the ceiling
StalaGmites grow from the ground

Is the picture upside down?

I always thought it was when the tites (tights) come down, the mites (mights) go up...

Then again, I have a dirty mind

You mean QWEST building? Could be.

It's the old Northwestern Bell Building. I'm not sure if it was ever the AT& T building. Here's the original view:

Here's the site today:

The user photo feature on the right has an old photo of the days before the building got its crown; it looks naked and blunt without it.

One does not simply take photographs of Mordor...

Other means of remembering:

Stalactite has a T, which looks like a vertical beam hanging from a ceiling.
Stalagmite has an m, which looks like two mounds on a floor.

StalaCTite has two hard consonants, and stalactites come to a point.
Stalagmmmmmite has a smooth m, and stalagmites have a smooth bottom.

Or my personal preference: you just frickin remember!

Nothing dirty about it all:

When the mites go up,
The tights come down!

Like say, stepping into a hill of mean little fire-ants. Those tiny little buggers'll make you shed your shorts in a hurry.

We have lots of lovely critters here in Florida. Even a few stalactites, too.

So how did you manage to get a photo of a utility building without getting arrested by the security guards?

Trying to take pictures of god awful socialist-realist Murals on the ATT building in Denver gets the attention of homeland security

StalacTites are on Top.

I actually have tons of pictures of that building including many of the lobby which is really neat. I work on the 11th floor once and a while and none of the security guards cared that I was taking pictures.