Recently we sailed on Sapi to the Fort. They are not allowed inside - security, federal property.
Perhaps today this is the most mega-Lego granite that I have ever seen.
The foundation on which it was built is "poured", at least what can be seen from small boulders.
The walls are sometimes composed of blocks of a very intricate configuration, since the fort has only one axis of symmetry, then in its walls (I believe) there are only one pair of identical blocks. The requirements for the accuracy of making blocks are such that if one window is a little mistaken, then the next one will not be assembled.
Frost and water, all the same, pushed the wall, the grass grows and the credit card can probably be shoved.
Promotional video:
This is the basis.
About six years ago I had to work on this fort - the horizontal between floors and above is also granite.
This is what the premises look like inside - if a shell flies into the window, then if it doesn’t put the whole floor down, then it’s a shell shock, I mean that, like with other forts, doubts arose that they initially had a military purpose. Many windows, wide on the outside, taper inward.
Offhand, 10 percent of the area is windows, so every 10 crazy firecrackers will fly in. On F. Constantine, such windows were covered with armor.
Fort "Constantine".
Fragment of a 5-gun battery with an armored parapet.
This is how the upper part of the fort wall looks like - it is dressed in iron.