When was the White House built?

M: Hi, Catherine. Haven’t seen you for a long time. How is your vocation?
W: Terrific ! I went to Washington D. C. to visit my cousin. I saw the Jefferson Memorial, the Lincoln Memorial, and the White House.
M: What a pity is that I’ve never been there. What do you like best?
W: No doubt the White House.  It’s been the official home of the American presidents since 1800.
M: I didn’t know the history of it. Is it really as nice as everyone says it is?
W: It’s a two - story building built of stones. But it is simple and dignified. It was named the White House after the British burned it in the war of 1812.
M: I remember now. The president then was James Madison. And his wife Dolly ran out of the burning building carrying the portrait of George Washington.
W: That’s right, it’s hanging in the East Room now.
M: How big is the White House?
W: There are one hundred thirty - two rooms inside it and covers eighteen acres of land outside.  It has to be painted every four years.
M: How much are the visitors allowed to visit?
W: Only six rooms are open to the public. It’s a popular, and there are always too many people waiting for their turns.