Meet the King's Chimney Sweep

A father-and-son team of chimney sweeps at the royal palaces walks through a trade built on child labor and soot-choked danger before industrial-era reforms cleaned it up. Between wedding-luck traditions and a rooftop demonstration, the film makes a case for a job most people only know from Mary Poppins.

Why it's free: Free on Great Big Story's own channel; GBS produced and posted it there itself.