What is your favorite two destinations (1-2 punch) in a country?

Hey everyone,

How are you? I am wondering what your favorite 2 destinations are in a country. For example, Peru might be Lima and Cusco, Brasil might be Rio and Iguaçu Falls.

For me, I love:

CDMX & Puerto Vallarta

Tokyo & Fukuoka

Seoul and Jeju Island

Los Angeles and NYC

Madrid and Seville

It could be a combination of your two favorite cities, a city and a nature oriented destination, a city and a beach... any combo that you enjoy and recommend!