JuanPabloC

I have two weeks in Korea and I am trying to decide how to split my time between Seoul and Busan. I know Seoul is the obvious choice but I have heard Busan has a completely different vibe and is worth spending real time in. What are the things that make Busan worth visiting beyond Haeundae Beach? And are there other cities or regions I should consider? I have heard Gyeongju is good for history. What would people who know Korea well recommend for a first-time visitor with two weeks?