Do these sentences below sound natural?

We visited an exhibition of ancient Egypt which about 250 collections owned by the National Museum of Antiquitics in Leiden, The Netherlands, were exhibited.

The worthwhile curiosities made about 3000 years ago were in front of me. The fact made me amazed.
I literally got to see the papyrus up close which I've seen in history textbook long ago. That was also exciting. Mummies and their coffins which hieroglyph were beautifully written on them were especially impressive. We could see the mummies of a cat, a snake, and a crocodile in the room too.

We read a book about mummies before we visit the exhibition. I think that helped us a lot to understand the ancient Egyptian view of life and death. Thanks to that, we could enjoy the exhibition more.

Hi, I've made some small changes that I think make it sound more natural. There are lots of little ways you could change it that would work. Great work! I hope this helps.
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We visited an exhibition on ancient Egypt, which contained about 250 collections owned by the National Museum of Antiquities in Leiden, the Netherlands.

The fascinating relics on display in front of me were made about 3000 years ago. This fact made me feel amazed.
I literally got to see the papyrus up close. The same papyrus I'd seen in a history textbook long ago. That was exciting. Mummies and their coffins on which hieroglyph were beautifully written were especially impressive. We could see the mummies of a cat, a snake, and a crocodile in the room too.

We read a book about mummies before we visit the exhibition. I think that helped us a lot in understanding the ancient Egyptian view of life and death. Thanks to that, we could enjoy the exhibition in more depth.