Chhatrapati Shivaji Maharaj Terminus, a UNESCO world heritage site in Mumbai - Maharashtra, India

(12 noon EDT) -- From Australia's Great Barrier Reef to Turkey's archeological site of Troy, Regent Seven Seas' 2021 World Cruise will take passengers to 56 UNESCO World Heritage Sites -- with business class airfare, a pre-cruise stay and all shore excursions included.

Departing from Miami on January 5, Seven Seas Mariner will visit a total of six continents, 30 countries and 61 ports in 117 nights. The cruise, which starts at $61,999, will sail throughout French Polynesia, Australia and New Zealand, Southeast Asia, the Middle East, the Mediterranean, South America's west coast, the Panama Canal and Southern Caribbean.  It will conclude in Barcelona on May 3.

Among other standout UNESCO World Heritage Sites the ship will visit are the Chhatrapati Shivaji Terminus in Mumbai, India; Old City of Acre outside of Jerusalem (Haifa), Israel; medieval city of Rhodes in Rhodes, Greece; Palau de la Musica Catalana and Hospital de Sant Pau in Barcelona, Spain; and the Bahla Fort in Muscat, Oman.

Eleven ports will feature overnight stays, while three -- Easter Island; Brisbane, Australia; and Aqaba, Jordan -- will offer full-day land experiences.

"We thoughtfully design world cruise itineraries to bring guests to sites they desire to explore, ranging from iconic destinations to the hidden gems that can only be accommodated on a cruise of this length," said Jason Montague, Regent Seven Seas Cruises' president and chief executive officer.

"Guests embark on world cruises to discover many destinations in one voyage with immersive experiences, visit museums, see historical sites, appreciate local arts and culture, and enjoy exclusive shoreside activities offering a unique way to understand our world."

In addition to airfare and land experiences, the cruise fare will include unlimited beverages (including fine wine and premium spirits), specialty restaurants, prepaid gratuities and transfers. Passengers also will enjoy complimentary door-to-door luggage service, transfers to and from the ship and visas.

--By Gina Kramer, Editor