The summit isn't the point, it's the approach. Every climb necessitates a walk through multiple landscapes. You just walk for hours through various vistas and somehow you end up in some completely alien place.
Its the best thing ever.
Even if you just walk from top to bottom you go through a variety of climatic zones. I've had very little experience of proper mountains but when I lived in Sydney I went to the blue mountains a lot. They're not mountains but they still give you these ecological strata to move through.