What are five highlights of the devastation or buildings destroyed by mt Vesuvius?

Answer 1

There are more than five highlights that I can think of but the biggest one has to be the ruins of Pompeii. I've been there, it's amazing to walk around on the streets and look at the houses and shops. And the museum has a bunch of plaster casts of people and animals that were trapped. It's amazing.
Here are a few sites I found with lots of info about the volcano and the eruption of 79AD.
http://en.wikipedia.org/wiki/Mount_Vesuvius
http://volcano.und.edu/vwdocs/volc_images/img_vesuvius.html
http://www.cet.edu/ete/modules/volcanoes/vmtvesuvius.html
http://vulcan.fis.uniroma3.it/vesuvio/79_eruption.html
http://en.wikipedia.org/wiki/Pompeii

Answer 2

I didn't know they were numbered. The main highlight is the preservation of Pompeii and the information it has yielded about life in 79 AD. Another is the scientific detail we have from Pliny the Younger, who witnessed and documented that eruption. A third is the long-term nuturing effect of the eruption on soil which makes the area an intensively farmed region. A fourth is the 1944 eruption, which just happened to barge into World War II.