The underwater city near Naples: ruins of an ancient Roman port at the bottom of the sea.

According to The Sun: On the island of Ischia, located near Naples, one can find an underwater city. The island can be reached by ferry from the Italian mainland in less than two hours.

The beautiful Italian island is known for its lively beachfront bars and picturesque swimming spots, but it also has a secret.

At the bottom of the sea, around the island, lie the underwater ruins of Aenarum.

Between 130 and 150 AD, the ancient Roman city was completely submerged by the Mediterranean Sea. At the bottom of the sea, the ruins of the Roman port, docks, cisterns, houses, and workshops still remain.

The island is also known for its numerous natural hot springs, formed due to the volcanic geology of the island. Large pools are located in Giardini Poseidon Terme - the island's own wellness park.

The thermal waters of Ischia are beneficial for a range of physical ailments, including arthritis, skin conditions, and respiratory issues.

One visitor described it as a 'fairytale place' with 'incredible views' worth climbing the steep stairs to see.

The summer on the island is very hot, with temperatures reaching up to 30 degrees Celsius, and the average nighttime temperature is 24 degrees.

To reach Ischia, one can take ferries that run from Naples and Pozzuoli year-round. Ischia is a combination of natural beauty and history.