What's this type of architecture called?

[AoTFan]

You see how like the columns "curve into" the ceiling?  I'm sure there's a name for that, just not sure what.

[ER]

Arris vaults.

[AoTFan]

Arris vaults.

Thanks!  That was driving me nuts.

Out of curiosity, how did you know that?

[ER]

I'm married to someone who has a deep interest in architecture and reads about it constantly, and I've picked up facts about the subject from him.

You encounter a modification of that style of arch in the Alhambra in Granada, Spain, (though the muqarnas there conceal it somewhat) and also see it more traditionally in Byzantine architecture and in styles of building derived from the Byzantines, like in some of the old structures in Russia, even inside the Kremlin.

Arris vaults are something of an illusion and lack the strength of some other arch structures because the vaulting is less supported, but it looks good and also, hey, if something can stand a thousand years, it must be strong enough.

Sometimes my husband makes amusing observations, like the first time he made it to Solitude in Skyrim, he took one look at the natural arch the city is built on and said, "That wouldn't stand a day in nature." And he went into why that arch as opposed to say, the arches out west in the desert, had nothing to keep it up, etc. ignoring, I guess that he was playing a game filled with giant crabs, dragons and magic spells.