I rode up to Buzludzha after work and the view was amazing! It is not "officially" open or anything so it is nice and quiet - not throngs of tourists hanging around, or anyone trying to sell you something.

It is all locked up but, of course, it is possible to climb in if that is your kind of thing - it's not easy, though! Probably quite dangerous, too, and there is no guarantee anyone is going to find you if you slip off some of the ropes left behind by others. For me, it was worth it 😉

Take note that the road up there had a fair bit of debris on the exits of the corners.