Herculaneum, also called "the second Pompeii" is one of the best preserved ancient Roman towns to this day. In many aspects, even better than Pompeii itself. The site is not as large as Pompeii but it has been estimated that only one third of Herculaneum has been excavated so far. What you can find here, in contrast to Pompeii, is for example entirely preserved two-story buildings together with original wooden logs, beds, doors and other furniture. In my opinion, the site of Herculaneum is more concentrated, it occupies less space but it's as great as its famous counterpart - Pompeii. If you visit the bay of Naples, although most of the tourist head straight for Pompeii (I have described it here), don't miss Herculaneum - you won't regret it.