The roof is very beautiful. But you have to be careful - there are cracks. The fort is worth a visit. For the fearless, you can climb inside. But it's better with insurance and not alone
Fort 7 is a pretty good fort.
Reasons:
+more than a few well preserved
+far from residential buildings (+vibe)
+getting there is easy
+ there is a place to climb
excellent forest, the fortification itself is almost underground on the surface of the concrete roof. There are soldiers' trenches around the structure, a lot of bomb craters, I liked it.