Naples:

1. Pompeii Archaeological Site: This ancient Roman city was destroyed by the eruption of Mount Vesuvius in 79 AD and is now a UNESCO World Heritage Site.

2. Naples National Archaeological Museum: This museum houses an extensive collection of Roman artifacts, including mosaics, sculptures, and frescoes.

3. Castel dell'Ovo: This medieval castle is located on a small island in the Gulf of Naples and offers stunning views of the city.

4. The Royal Palace of Naples: This palace was the residence of the Bourbon Kings of Naples and now houses a museum with a large collection of Baroque and Rococo art.

5. The Naples Cathedral: This cathedral is dedicated to Saint Januarius, the patron saint of Naples, and contains many important works of art.

Amalfi Coast:

1. Positano: This picturesque town on the Amalfi Coast is known for its colorful houses and narrow streets, and it offers stunning views of the sea.

2. Amalfi Cathedral: This cathedral is located in the town of Amalfi and features a mix of architectural styles, including Byzantine, Gothic, and Baroque.

3. Villa Rufolo: This villa in Ravello was built in the 13th century and features beautiful gardens and a stunning view of the sea.

4. Path of the Gods: This hiking trail offers spectacular views of the Amalfi Coast and takes you through some of the most beautiful scenery in the region.

5. Sorrento: This town is known for its beautiful beaches, stunning views, and delicious food.

While these are just a few of the top sites in Naples and the Amalfi Coast, a guidebook can be extremely helpful when planning your trip. A guidebook can provide detailed information on each site, including opening hours, admission fees, and any other important details you need to know before you go. It can also provide helpful tips on how to get around the area, where to stay, and where to eat. Additionally, a guidebook can give you an overview of the history and culture of the region, which can enhance your overall travel experience.