Looking for books with a strong “old generation vs. new generation” dynamic

I'm interested in novels where the central tension or theme revolves around the clash, misunderstanding, or complex relationship between an older generation and a younger one.

A classic example that comes to mind is The Leopard by Giuseppe Tomasi di Lampedusa, which beautifully captures the decline of an old aristocratic world and the rise of a new social order.

Can anyone recommend other literary books where this generational conflict or transition is a major driving force of the story?