"Official residence of the British monarch."
| Available at level |  1
|
| Territory |  3x3
|
| Buildings allowed to build |  2
|
| Construction time |  12 h
|
| Electricity |  -230
|
| Yields experience for construction |  +150
|
| Profit |  +1500 / 8 h
|
| Yields citizens' happiness |  +6500
|
| Price | Free with purchase of Marble Arch, Albert Hall, Tower of London, and Big Ben -- total cost $23.96. |
| Demolition costs | 80000 / ?
|