The world's most expensive yacht known as only 'A' own by Russian billionaire Andrey Melnichencko.

This 394-foot (120 meter) yacht has never before been viewed by the public — until now.

Andrey Melnichencko

The Wall Street Journal gained unprecedented access to tour the ship, called the ‘A,’ which reportedly costs more than $300 million.

It was designed by the legendary French designer, Phillipe Starck, the “A” features luxuries most of us can hardly dream up, like a glass-bottomed pool built atop a disco or a plush room with walls covered in stingray hides.

Among other absurdities, the ship has a $60,000 bannister, a master bedroom that opens only to a fingerprint and a secret room designated specifically for “nookie,” which any owner of a ship like this surely has no shortage of.

Watch the Wall Street Journal’s exclusive tour of Andrey Melnichencko’s famous yacht below: