Guess where?

[nhytgbvfeco2]

Could it be the Alborz mountains of Iran?

[Kilo11]

Could it be the Alborz mountains of Iran?

[Kilo11]

Hint: This place was somewhat (in)famous in the Middle Ages.

[Muizer]

I don't think more hints are needed. Just nhytgbvfeco2 did the hard work, so giving the answer now is a bit like theft.

[Kilo11]

Muizer, if you have a guess, I would say to fire away. nhytbveco has had enough time to say something, and guesses are what keep the ball rolling.

[Muizer]

Aye, I think it's Alamut Castle.

[Kilo11]

It is indeed Alamut. A forbidding-looking place, and not hard to see how it remained unconquered for so long. The turn is now Muizer's.

[Muizer]

Spoiler Alert, click show to read: 

[Septentrionalis]

This is surprisingly hard. I think I lack a name for those tiles.

[Muizer]

Hint: The building style has the word 'revival' in its name.

[Septentrionalis]

Thanks, M! I got a really Middle American vibe out of that and it turned out to be Mayan revival. Ennis House, a residential building in Los Feliz, Los Angeles, California.

[Muizer]

Good job that! Your turn.

[Septentrionalis]

This place is geographically far removed from the previous riddle, but there is a connection for those who seek.

[Kilo11]

I am super stumped on this one. There is a whole swath of Germany that looks a lot like this, and which I am familiar with, but this could be anywhere in that area. Do you think there is any sort of hint you could give?

[Septentrionalis]

The connection to the previous picture was meant to be kind of a strong hint, but I'll elaborate that this place has the same architect as the previous one. I now realize that a "connection" is actually quite vague and could mean a lot of things.

[Kilo11]

I think I got it. Is this Taliesen?

[Septentrionalis]

I think I got it. Is this Taliesen?

This is it indeed. Or Taliesin, if you allow the correct spelling. Frank Lloyd Wright's home and studio in southern Wisconsin named after a Welsh bard. And also the site of a gruesome mass murder.

[Kilo11]

Spoiler Alert, click show to read: 

[Kilo11]

Double hint: In the image is a half-cropped clue concerning the general location. Also, the building is a Cold War relic that is now decommissioned.

[Septentrionalis]

I have tried now on three occasions and I cannot find it.