www.theratandmouse.co.uk
One Hyde Park
London
Owner: Sheikh Hamad, Foreign Minister of the Gulf State of Qatar
Approx. Price: $197 million
Size: 20,000 square feet
Features: penthouse apartment; underground parking for 115 vehicles; private elevators to each residence with eye scanners; underground passageway to the nearby Mandarin Oriental hotel; 24-hour hotel services; bulletproof windows; views of Hyde Park; wooden baths; marble work surfaces; floor-to-ceiling fridge; panic room.