Dear linda, I'm very glad to write to you. You asked me about the architectures of China that are famous in the world a few days ago. The most famous one is the Great Wall. The Great Wall, at 21,196 km, the longest wall in the world. It is made of stone, brick, tamped earth, wood, and other materials. Forbidden City is the largest palace in the whole world. The Forbidden City covers an area of 720,000 square meters and has approximately 9000 rooms. There are many other famous architectures in China, I will introduce them to you next time.