Henley House, with four bedrooms, is a Grade II-listed mews home over four floors with 4,000sq ft of luxurious living space.
Meticulous clean lines are achieved inside by frameless glass walls.
A gym, steam room, media room/library and a wine cellar are on the lower ground floor, with a study, an ultra-sleek bespoke kitchen/dining room and an en suite bedroom at ground level.
The triple-aspect first-floor reception room is like a vast art gallery, with doors to a sun terrace.
The master suite, with en suite dressing room and bathroom, is at the top of the house.
Off-street parking for two supercars and the use of Belgrave Square Garden complete the picture.
The mews home has been listed for £11.75 million. Through Hamptons (020 8012 2902).