The Victorian No Man's Land Fort, set in the middle of the Solent, is set to open this month.
With spectacular views of the sea, the isolated fort, which is just off of the coast of the Isle of Wight, has been transformed into the ultimate luxury pad.
Complete with rooftop hot tub, shops and even its own nightclub, the amazing venue could be the fortress of a James Bond villain.
Thanks to a multi-million pound revamp, the fort can now sleep 44 guests with a capacity of 200 for parties and events.
The quirky hotel is located 2km out at sea, meaning guests have to make an exciting entrance by helicopter or boat.
While staying on the 60ft-high ocean hotspot, guests can relax in the day spa, eat in fancy restaurants or have a BBQ on the sun-filled roof.
There is also a range of waterspouts on offer including jet biking, sea kayaking and kite surfing.
A spokesman for AmaZing Venues said: "No Man's Fort is an inspiring private island that offers an unrivalled experience.
"It is three times the size of Spitbank Fort and boasts its own lighthouse with spectacular views across the Solent.
"You'd think being a mile offshore is unique enough, but we've crammed every possible space with unusual things to see and experience.
"The potential of this magnificent sea fortress is only restrained by your imagination.
"A trip to the fort can be as relaxing or action-packed as you wish.
"For those intent on relaxation, No Man's offers its own spa, a choice of bars and a large sun deck."
The retreat, which is described as "75,000 sq ft of fun", will set you back £450 per night for a luxury suite.
And if you really want to push the boat out you can you can opt for the extravagant lighthouse abode, which can cost £1,150-a-night during the summer.
Built between 1867 and 1880, the unusual destination has even been featured in the 1971 Dr Who episode, The Sea Devils, with Jon Pertwee.
