One-of-a-Kind Redwood Cabin

Owner of a 980-year-old redwood tree/log cabin Davlet Abdullayev talks about how fewer than three structures of this kind are known to exist worldwide, and none can ever be built again. What does the inside layout contain? Why was this redwood cut down and how does this serve as a means of preservation? What were the costs associated with turning this tree into a one-of-a-kind house and how long did the process take?