This abandoned Russian fortress is probably one of the creepiest places I have seen.

The reason for it to have such a strange look is because it was used later by Russian army to test the influence of Russian alternative to napalm inside of the brick houses.

Due to very high temperature of napalm the bricks started melting just like ice melts in the spring forming the icicles, but those icicles are of red brick.

-Danny Choo

Wow! That's pretty freakin' hot.

Myheh, I read the boingboing which PJ plagiarised above and I'm not convinced.
Bricks melt when they are fired, that's how they bond and become strong.
I'm not sure they would melt a second time but if I could get my hands on some decent napalm I'd test it out for myself.
Incidentally, you can make napalm by dissolving Styrofoam in petrol,

plagiarized?
I credited Danny Choo as the source...
perhaps that is incorrect as the same pics are seen here...and here...and yes, they are on boingboing too...

woberto: perhaps the bricks had a high concentration of silica?

I just think that if you explode a napalm bomb in a room, it makes sense that the residue is the napalm.
Anyway it must ahve been damn hot, and knowing the Ruskies there would have been some people in there too.