The Underwater Archaeological Park of Baia, located off the coast of Bacoli, Italy, offers a unique opportunity to explore the submerged remnants of an ancient Roman city. This site was engulfed by the sea due to the phenomenon of bradyseism and now preserves the remains of Roman villas, mosaics, and thermal baths that once belonged to the Roman aristocracy. Here is a guide to help you make the most of your visit to this extraordinary underwater park.

Things to See

Villa with the Entrance to the Porch

One of the highlights of the park is the villa with the entrance to the porch, which is a favorite among divers and snorkelers. This villa provides a glimpse into the luxurious lifestyle of ancient Roman elites, with its intricate mosaics and elaborate architectural design.

Nymphaeum

Situated at a depth of 7 meters, the Nymphaeum is another notable site. This large rectangular room with an apse once housed marble statues depicting scenes from Greek mythology. These statues have been relocated to the Baia Castle, where they are part of a life-size reconstruction of the original Nymphaeum.

Villa dei Pisoni

The Villa dei Pisoni is an extensive complex that features a large garden, residential rooms, and thermal baths. It is named after the Pisoni family, notable Roman aristocrats. Visitors can explore the remains of the villa’s sophisticated water systems and luxurious living spaces.

Secca Fumosa

Located in Zone C of the park, the Secca Fumosa is characterized by massive submarine emissions of gas and hot water. This unique environment supports a variety of marine life, including sulphobacteria, which are part of a distinctive food chain.

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What Not to Miss

• Baia Castle: Before or after your underwater adventure, make sure to visit the Baia Castle. The castle houses the Museum of the Archaeological Park of the Phlegraean Fields, where many artifacts recovered from the submerged city are displayed.
• Portus Julius: Explore the ancient military port of Portus Julius, which is located in Zone B of the park. This area offers a fascinating look into Roman engineering and maritime history.

Tips for Tourists

• Diving and Snorkeling Tours: The park offers various tours tailored to different interests and skill levels. Certified divers can explore multiple sites through single or consecutive dives. Those without certification can opt for the “Try Scuba” program, which includes a guided dive with an instructor. Snorkeling excursions are also available, allowing visitors to admire the ruins from the surface.
• Guided Tours: To fully appreciate the historical and archaeological significance of the park, consider booking a guided tour. Expert guides provide valuable insights into the submerged structures and the ancient Roman lifestyle.
• Equipment Rental: For a hassle-free experience, the park offers full scuba equipment rentals and Go-Pro rentals to capture your underwater adventure. Make sure to book these in advance to secure availability.

How to Get There

The Underwater Archaeological Park of Baia is located in Bacoli, near Naples. You can reach Bacoli by train from Naples to the Pozzuoli station, followed by a short bus or taxi ride. Alternatively, you can drive directly to the site.

Opening Hours: 9:00 AM – 7:00 PM

Ticket Prices:

• Single dive: €40
• Two consecutive dives: €80
• Try Scuba: €100 (single dive), €140 (two dives)
• Snorkeling: €30 (single site), €60 (two sites)
• Equipment rental: €30/day (scuba), €35/day (Go-Pro)

The admission fee to the Archaeological Park is €5 per dive.

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