1. Buckingham Palace
Value: $1.55 billion
Residence of the Queen of England, the place will never go on sale. In 2012, the Nationwide Building Society valued the house at roughly $1.5 billion. The property belongs to the British Sovereign and to the current monarch of England, Queen Elizabeth II who came into power in 1952. The estate apparently has 775 rooms which include 52 bedrooms, 19 staterooms, 188 staff rooms, 78 bathrooms and 92 offices. Talk about a royal way of living!