• Santorini's violent volcanic history has left behind black sand beaches.black sand beach image by jimcox40 from Fotolia.com
  
  It's possible to find cruise lines that offer inexpensive trips through the Greek Isles with comfortable accommodations and a multitude of services and amenities. Ships make port in several Greek cities where guests may spend the day on an excursion exploring the local terrain, or choose to stay on board and take advantage of its pools, golf courses, fitness centers, and more.
  
  

Costa Cruise Line

• The ruins of Renea are on display at the Archaeological Museum.Ruins image by Rafayui from Fotolia.com
  
  The seven-day round-trip cruise onboard the Costa Victoria takes guests from Italy to Greece and Croatia. The Costa Victoria makes stops in Ancona, Italy, Santorini, Mykonos, Athens and Corfu in Greece and Dubrovnik, Croatia. Visit the Panaghia Paraportiani church in Mykonos or see the ruins of Renea at the archaeological museum or visit the village of Oia and the Profitis Ilias mountains in Santorini . In Athens guests can explore the city and the Temple of Poseidon which was built in 444 B.C and sits 200 feet above sea level. The ship's amenities include five restaurants and 10 bars, a fitness center and sauna, jogging track, theater, casino, disco, Jacuzzis and three pools. This cruise is available from $529 USD per person before airfare, as of summer 2010.
  
  

Norwegian Cruise Line

• The Temple of Artemis was built in 550 B.C.Temple image by fseveri from Fotolia.com
  
  Norwegian Cruise Line offers a seven-day, round-trip Greek cruise on the Norwegian Gem that boards in Venice, Italy. The ship ports in five cities throughout the trip including Dubrovnik in Croatia, Athens, Nafplion in Greece, and Ephesus in Turkey. In the 7,000 year old city of Athens, guests can visit the Parthenon and the Theater of Dionysis. In Esphesus, travelers can visit the Zeus Altar and one of the seven wonders of the world, the Artemis Temple. On board the ship, accommodations range from simple and comfortable inner staterooms to three-bedroom garden villas. The ship is equipped with a multitude of amenities to enhance a vacation with fine and casual dining restaurants, tennis courts, a fitness center and spa, casino, jogging track, multiple pools, a theater and video arcade, spa and a salon. Children will enjoy Nintendo Wii on a two-story television screen, waterslides, rock climbing wall, kid's center, and a teen disco. Seven-day cruises to Greece are available from $549 USD per person not including airfare, as of 2010.
  
  

Royal Caribbean International

• The Achillion Palace was built for Austria's Empress Elizabeth in 1890.palace image by Piotr Markowski from Fotolia.com
  
  The seven-night Greek Isles cruise on the Royal Caribbean Cruise line also embarks from Venice, Italy. Before returning to Venice, this ship makes port in a number of cities including Ephesus, Turkey, Dubrovnik, Croatia, Santorini, and Corfu. Guests can choose an excursion to Santorini to enjoy its black and red-sand beaches. Spend a day in Corfu and visit the Achillion Palace and the Terrace of the Muses. Basic ship accommodations consist of an 138 square foot interior stateroom that comes with a vanity area and private bathroom. On board the Splendor of the Seas guests can spend an evening in the Casino Royale, play on the 18-hole miniature golf course, exercise in one of the pools or at the fitness center, or relax at the day spa. The seven-day cruise to the Greek Isles is available from $619 USD per person before airfare, according to 2010 pricing.