Featuring on CNBC’s “Secret Lives of the Super Rich”, the lavish property has an underground lake, 24-karat walls and a hidden library.
Estate broker and listing agent Senada Adzem said: “This castle was designed to make a billionaire’s jaw-drop.”
The home’s relatively low-key stone and glass façade hides seven floors entered around a six-sided staircase.
To make the most of the sensational views, there are 35ft floor-to-ceiling windows.
One of the living rooms features a wall covered top to bottom in mink fur.
There are also hidden rooms, and one wall in the reception area slides back to reveal a crimson velvet library.
A secret switch in the library goes on to reveal another hidden room, this time an office.
Breakfast is not a low-key affair in this home, as there is a special egg-shaped breakfast nook, with walls adorned with 24-karat gold.
A custom-made egg sculpture worth £110,000 hangs from the ceiling.
Glass stairs lead to the five bedrooms with cashmere covered walls. The en-suite bathrooms each feature a different rare stone.
The master suite, which has a walk-in closet coated in 24-karat gold, has a floor swathed in white Scandinavian fox fur and its windows look out onto a £1.3million sculpture.
A 360-degree shower sits in the centre of the onyx-encrusted master bath.
Being located in one of the ritziest ski resorts in the world, the property of course has a ski den with ski in/ski out access to a private chair lift.
After a day on the slopes, guests can retreat to the home’s spa level, which is complete with a Himalayan salt chamber, steam room and high-tech shower.
So how much does all this luxury cost? The property is the most expensive in St Moritz, and is on the market for $185million/£140million.
In the UK, Grand Designs tends to show the best property in the UK, and last night Kevin McCloud met a couple who had taken 16 years building their home.