Buckingham Palace in London is worth about $4.9 billion and has about 775 rooms, including royal and guest rooms, offices and ...

Though it was built in the 1990s, the house drew design inspiration from the palaces of Roman nobles. Not much is known about the interiors—the residence is private in every sense of the word ...

From historical royal residences steeped in tradition to modern architectural wonders that redefine living spaces, the world’s most expensive houses showcase not just wealth but also the artistry and ...