The most famous house on the planet? Okay, so Buckingham Palace is a little more than your standard dwelling, but this may well be the most iconic residence on Planet Earth. The Queen (yes The Queen) lives here, a stately-as-stately-gets mansion built in 1703 for the Duke of Buckingham which became the official residence of the monarch in 1837. Visits are possible during the summer months, and you’ll quite simply be blown away by the opulence on show. Don’t expect to see Her Majesty on your tour however — visits are only available when she is out of town.