So we may think ‘guided growth‘ is a typically 21th century design methodology, yet apparently it was also in vogue in the 19th century.
According the original description in the Picture magazine 1893, this century old Maple tree “has been turned into a kind of temple of two stories, each of its compartments being lighted by eight windows, and capable of containing twenty people wit ease. The floors are constructed of boughs skillfully woven together, of which the leaves make a sort of natural carpet. The walls are formed of thick leafage, in which innumerable birds build their nests”
We are unsure if this tree ever existed or that is a 19th century design fiction.