Some good ol' practical effects

These guys really knew how to make use of practical stunts and using camera tricks to make their effects. This famous scene from Safety Last was really done on a roof top. The hanging from the clock hands too were done by Harold Lloyd himself too. Its pretty crazy how back in the day they were so creative in how they made these shots work.
Buster Keaton, The Marx Brothers, and Charlie Chaplin who also made and invented various stunts and practical effect in their films.