This seven-hour cruise (including stops) will take you to the famous Santorini volcano and you’ll have the chance to swim in the hot springs. Caldera is a Spanish word that means ‘sunken crater,’ and on this tour, you will get the chance to sail across the lagoon to Nea Kameni, a tiny Greek volcanic island.

Once ashore, you will get to walk across its Mars-like landscape and enjoy the stunning views of the sea. Following the volcano adventure, you will get to experience the naturally heated hot springs and their therapeutic water and mud.

The cruise will also take you to Thirasia, an island nearby to Santorini, a picturesque island with 20 churches and only 150 residents. You will have the chance to explore the streets and maybe a taverna or two. Then the boat will cruise back to Athinios port and you’ll be dropped off at your hotel.

There is an upgrade option on the tour, which includes a visit to the village of Oia, world famous for its stunning sunsets.