The Hourglass Sanatorium (1973)

Sanatorium pod klepsydrą

A young man named Josef visits a dilapidated Sanatorium to see his father Jakob. On his arrival, a sinister doctor informs him that his father had stopped breathing but hasn't died yet, perhaps due to Josef's arrival which may have halted time in the sanatorium. Josef undertakes a strange journey through the many rooms of the sanatorium, each which conjures worlds composed of his memories, dreams and nightmares.