Just a few days before, someone was asking about how the Bitcoin blockchain would look like, and one of the responses linked to what I felt was quite an attractive visualisation of it: https://bitcointalk.org/index.php?topic=4312629.msg38734846#msg38734846

Or the direct link: https://anders.com/blockchain/

It's fairly straightforward, but you'd need to know a few of the basics behind how Bitcoin works to understand. I'm very mainstream and I got it quite easily, so hope that helps. I'm always having a side interest in visualisations myself and was a bit surprised not to have seen that one until a few days ago.