Mackintosh: Glasgow's Neglected Genius (2018)

The film examines Mackintosh's iconic buildings, notably the Glasgow School of Art. Interwoven with his architecture, design and watercolours is the personal story of Mackintosh. Little known at home, his work found favour on the continent. In later years he struggled for work, and came to endure real poverty, but continued to create remarkable pieces of art.

Unfortunately the movie Mackintosh: Glasgow's Neglected Genius is not yet available on HBO Max.