Buckingham Palace, London

Buckingham Palace, the official London residence of the British monarch since Queen Victoria in 1837, has 775 rooms including 19 state rooms, 52 royal and guest bedrooms, 188 staff bedrooms, 92 offices, and 78 bathrooms. Originally built as Buckingham House in 1703, it was extensively remodelled by John Nash and Edward Blore. The palace covers 828,000 square feet and sits within a 42-acre garden.