Just finished "Four Lost Cities: A secret history of the urban age", by Annalee Newitz. Delightful book - I stumbled across it because it covers Cahokia, an ancient city full of giant pyramids that is near modern day East St. Louis. I'd learned about Cahokia in "Native Nations" and wanted to know more. (Never heard of it? Me neither, probably because the US pretends that native people didn't have big cities of 30k+ with evidence of organized religion before European colonizers showed up.)
Highly recommend -- it's a quick and engaging read. In addition to Cahokia, it covers Pompeii, Angkor, and Çatalhöyük. All three had fascinating cultures that are so different both from each other and from modern life. Absolutely wild to read about.