My Holiday in Washington D.C

Last month I went to Washington D.C for vacation with my family. It is the capital city of USA. I had been there two times, so it was my third time visiting there. Washington D.C has many wonderful points of interest to go. One of the very famous place is White House which is a place where president lives. There is a fantastic envornment for president to work in. Before we walked in, we saw several secret service officers standing in front of the enterance. They wore same black suits and dark sunglasses. They all look so strong and cool as those as I saw in movies. After we finished visiting, we saw lots of visitors taking picture with president George W.Bush. Actaully that was not real president just a big paper picture. In this city, there are many different museums which are National Galley of Art, National Air and Space, United States Holocaust Memorial Museum,etc. By the way, museums are all FREE. In addition, China Town is a crowed place to go where you can find delicious food. Because Chinese food there is really good and there are more choices than in Calgary. Now I am planning for my next trip to USA ,and I hope that somebody can give recomendation on which cities are worth going.