Now I remember Elvis lived in Graceland, the america president lived in White House and the english Prime Minister lived in Downing Street.
I was find the price to tour Graceland:
Graceland Elvis Entourage VIP Tour* $68.00
Graceland Platinum Tour $30.00
Graceland Mansion Tour $30.00
About White House I find this:
Architectural Style: French Second Empire
Construction Dates: 1871 - 1888 (17 years total)
Supervising Architects: Alfred Mullett (1869-1874), William Potter (1875-1875), Orville Babcock (1875-1877), Thomas Lincoln Casey (1877-1888)
Chief Designer: Richard Ezdorf
Total Cost: $10,038,482.42
And the last question, the door of 10 Downing Stret is black.