The answers to the questions about famous hoses are the following ones:
1. How much does it cost for adults to go on a tour of Graceland?
If you like to visit Graceland and you are an adult, the prices are:
Graceland Mansion Tour $27 adults.
The Platinum Tour (includes admission to all Graceland attractions, including Elvis's Automobile Museum, tours of Elvis's custom jets [the Lisa Marie and Hound Dog II], and Sincerely Elvis film presentation) $32 adults.
Graceland Elvis Entourage VIP Tour (includes the "Elvis After Dark" exhibit) $68 for all ages
2. Who was the architect who designed the White House?
The Irish-born architect James Hoban were who designed the White House. it was built between 1792 and 1800.
3. What colour is the front door of 10 Downing Street?
The front door of 10 Downing Street is black.