This yacht has undergone the most extensive and expensive restoration of a private luxury mega-yacht in maritime history and is the first in the world to bear a passenger classification.

It is available for private charter only.

At 325 feet in length, the magnificent yacht includes 18 staterooms, all named after Onassis' favorite Greek Islands, and the extraordinary Onassis Suite which is undoubtedly a centerpiece of the yacht.

THE ONASSIS SUITE is comprised of three rooms – a large bedroom, bathroom and study – totaling 678 square feet. This Suite will provide the ultimate luxury shipboard accommodation with panoramic ocean views.

The bedroom features a king-size bed covered in fine Venetian linens, custom made furniture from Milan and Onassis' original Baccarat crystal wall lights.

The wood-paneled study features the original onyx fireplace, leather furniture and handmade Austrian lamps and a writing desk features silver-embossed stationery.

In the bathroom, which is complete with double sinks and a bathtub with six-head shower, LeFroy Brooks fittings complement the original rare marble finishes.

The Onassis Suite features three large walk-in closets, two surround sound stereo systems with DVD and CD players and televisions.

Each Stateroom, with dimensions ranging between 150 and 236 square feet, is named after one of the Greek Isles.

The Stateroom features include a double bed or two twin-sized beds with fine Venetian linens, seating area with antique prints of the Greek Islands, leather-inlaid secretaire, mirrored walk-in closets, surround sound stereo systems with DVD and CD players and views of the sea.

The Bathrooms feature six-head massage showers.

Perhaps the most famous spot on board, where John F. Kennedy first met Sir Winston Churchill in Ari's Bar in 1957.

The intricately detailed bar contains barrels and sea chests hinting of pirate treasure, whaling harpoons and an illustrated wall map of the world.

The circular bar itself was originally crafted from the timbers of a Spanish Galleon, wound with heavy sailing rope and is adorned with footrests and handholds of ornately carved whales' teeth. It features a glass top over a lighted relief of the sea, which depicts the development of ships through history with tiny model ships that can be moved around by magnets.

The barstools are covered in whale foreskin, a fact that Onassis delighted in telling his guests.

This elegant lounge owes its name to the breathtaking lapis lazuli fireplace, which is the focal point of the room where Richard Burton and Elizabeth Taylor once relaxed. Bookshelves surrounding the fireplace are filled with rare volumes.

Fine pieces of art including a Renoir, Le Corbusier and de Chirico line the walls.  

Carefully restored by an apprentice of the original craftsmen, the floor of the bronze-bordered swimming pool is inlaid with an exquisite mosaic copied directly from the Palace of Knossos in Crete.

With the push of a button, the bottom of the pool rises above the water to become a dance floor.

In the atrium is a majestic spiral staircase highlighted by an onyx and silver handrail circles the atrium, connecting the three cabin decks.

A delicate mural winds up the surrounding wall and a central mosaic with the "Christina" Yachting emblem adorns the floor.  

Encompassing half the Promenade Deck, the spa complex includes a fitness center, massage room, sports lounge and beauty salon as well as the sumptuous Jacuzzi Deck, fitted with a large jacuzzi, an open air bar and al fresco dining.

The main dining room can accommodate up to 40 people and features fine hand-finished tables, Venetian lace tablecloths, Waterford glassware, Ercuis silverware and a sunken marble floor.

Filled with books from around the world which are published in several languages, the library provides guests with a place to read some of the rare volumes or work at one of two writing desks.

This lounge features a grand piano, Italian furniture by Giorgetti and Maria Callas memorabilia including her sole gold record. Equipped with a presentation platform, Giorgetti furniture, and huge bay windows offering panoramic views, the Show Lounge houses video equipment and a stereo system.  

This brightly decorated room provides an ideal spot for children to convene and offers a selection of toys for their amusement. 

A fresh air system replaces the interior air approximately once every five minutes.

There are two-twelve passenger Hacker Craft mahogany tenders, water-ski boat, two jet skis, wind surfers and snorkeling gear.

Classed by the American Bureau of Shipping, the yacht fully complies with US Public Health requirements as well as the strict SOLAS (Safety of Life at Sea) regulations for passenger vessels carrying up to 36 individuals.

The Christina O, famed for magnificent parties, can host events for up to 100 guests using interior facilities and up to 250 in the canopied deck spaces.

Overview: On the Compass Deck is the Galaxy Bar and plenty of sun lounges.

On the Bridge deck is the Onassis Suite, the Bridge (open bridge policy), and the Central Atrium.

The Promenade deck includes: Reception, Show Lounge, Library, Massage Room, Beauty Salon, Central Atrium, Children's Playroom, Fitness Center, Sports Lounge, Jacuzzi Deck, Helicopter Pad.

The Main deck includes: Ten Guest Staterooms, Rendezvous Music Lounge, Main Dining Room, Central Atrium, Ari's Bar, Lapis Lounge, Swimming Pool, Canopied Dance Floor.

The Cabin deck has eight Guest Cabins.

The Yacht rents per day and rates are flexible between groups of 12 to up to 36 guests.

A small group can rent for as little as $ 60,000 per day plus charges and taxes.