I came across an article on lifehacker that explained how to create a heat map from your Google Location History.
I can't add much to the article but I'll try.
When I went to Google Takeout I requested my "Location History" to be archived and to e-mail me a link. I never got the e-mail. I went back to Google Takeout and to "Manage Archives" and downloaded the archive from there.
Then when I went to Location History Visualizer, it took me a while to find where to create the heat map. This is the direct link.
Here's my result.