- Year built: 14th century
- Founder: Edward III
- Must-see highlights: Grand Reception Room, St. George's Hall, The King’s Gallery, King's Drawing Room, Waterloo Chamber
- Unique facts:
- Many of the artworks and furniture pieces in the State Apartments are part of the Royal Collection.
- The Garter Throne Room is where investiture ceremonies are often held. Here, the monarch bestows honors upon individuals who have made significant contributions.