In terms of volume, the Royal Palace of Caserta is the largest royal residences in the world with over 1 million m³ and covering an area of 47,000 m².
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Biltmore Estate in Asheville, N.C. George Vanderbilt's 250-room castle is America's Largest Home and a top attraction in Asheville. Plan a visit to Biltmore House, explore 8,000 acres of grounds, or book a behind-the-scenes tour. Elegance and grandeur abound at Biltmore, America's largest home.
Guinness World RecordAccording to the Guinness World Records, Forbidden City holds the largest palace in the world. The Istana Nurul Iman, with 2,152,782 square feet (200,000 m2) of floorspace, holds the title as the world's largest residential palace held in Brunei.
The palace, like Windsor Castle, is owned by the reigning monarch in right of the Crown. Occupied royal palaces are not part of the Crown Estate, nor are they the monarch's personal property, unlike Sandringham House and Balmoral Castle.
Sitting among the rolling hills of East Sussex is an abandoned mansion shrouded in scaffolding. The building, which has been derelict for nearly 40 years and is reportedly larger than Buckingham Palace, is known as Hamilton Palace.
1. Biltmore Estate (Asheville, North Carolina): 175,000 square feet. The Biltmore Estate isn't just the largest privately owned house in the United States — it blows the competition out of the water.