Down in Depth Experience - The Sunken City of Baia

The Bay of Naples is a unique melting pot of history, archaeology, mythology, geology and volcanic life, perfectly emblematised by the Baia Underwater Archaeology Park.


The park is home to the sunken city of Baia; an ancient Roman city that was completely submerged by bradyseism activity, a phenomenon typical of the volcanic area of the
‘Phlegraean Fields’ in which the city was built.


The underwater engulfment left the city virtually untouched, transforming it a great testament to the wonders of the Roman era in the Neapolitan region.


At the height of its glory, the Classical Roman city of Baia was a honeypot for the ‘rich and glamourous’ of its time, who found hedonistic refuge in its natural beauty and the healing powers of its hot springs.


Personalities like the emperors Caesar and Nero built luxurious holiday villas in this spa resort to escape the hustle and bustle of urban life.


This maritime marvel is one of the world’s very few underwater parks and provides for a great day out to merge archaeology with a swim or a dive.


Some of the key diving sites include the Villa a Protiro, a luxurious villa with beautiful mosaic flooring, and Ninfeo di Claudio, a cluster of Roman baths, pavement and Emperor Claudius’ ‘Nymphaeum’, or relaxation chambers. The marble statues that decorated the Nymphaeum can be found in the Baia Museum, along with other remains uncovered from the depths of the waters.

How to visit

By Boat

Those who do not want to get wet, can still visit Baia with a glass-bottomed boat (every Saturday and Sunday). ( – 12 euro per person)



Simple dive with fins and snorkel. For those who don’t like scuba tanks, this is the ideal way to combine sea and archeology, many of the sites are in shallow water.



The diving centre Campi Flegrei offers everything you need from equipment to diving courses to guided diving tours, in addition to fully-serviced beach front facilities such as showers, changing rooms, bars, sun decks and more.