Ключевые слова: abandoned, architecture, armature, balkan, built, bulgaria, bulgarian, buzludzha, communism, communist, concrete, construction, creepy, destroyed, exterior, ghost, graffitti, grunge, history, house, ideology, interior, light, memorial, monument, national, past, peak, phantom, ruin, ruination, sculpture, shade, shape, shipka, socialist, socialistic, space, stone, structure, symbol, symbols, treasure, ufo, view, walls, wrack,