A place to visit in Santiago

Since I was a little girl, I have been struck by this museum, because it contains and shows the history of nature in different aspects, native peoples, very old fossils, among other things. I think as people it's very important to know and understand about our history, what we are and what exists around us because that way we become more aware.
Well, so I found out the entrance for Chileans and foreigners is free and in terms of schedules, open from Monday to Saturday from 10:00-17:30, Sundays and holidays from 10:00-17:30.
I hope to be able to visit it soon and be able to live this interesting experience!