This stunning property is Toprak Mansion, built by Turkish entrepreneur Halis Toprak, is in one of the most desirable areas of North London and occupies a good amount of space there. The house itself is around 28,000 square feet , this doesnt include the staff and guest apartments. In the house is a dining room that seats 40 and four kitchens, one with a walk-in cold storage area and an 80-foot-long grand salon. And what mansion would be complete without the glass elevator and Turkish bath? Trevor Abrahmsohn of Glentree Estates is handling the sale. The house was nicknames "Top Whack Mansion", maybe due to its £50m price tag. The house was recently purchased by Horelma Peramam, a billionairess from Kazakhstan.