Most people know about Pompeii, but know nothing about Herculaneum, Stabiae and Oplontis.
CC
I've got a book, uh, around here somewhere (I need an archaeology team, not just one archaeologist, and definitely not a housekeeper, the last one died in an avalanche), one of the many titles by the late Michael Grant, "Cities of Vesuvius", very nice survey.
Herculaneum is pretty well known. Has a bunch of skeletons still visible. Creepiest site of all.