1. My first choice would be Mount Rushmore. It was built during 1927 and 1941 and took 400 workers! It represents the first 150 years of the Untied States history. It is located in the Black Hills in South Dakota and is made of granite and mica schist. The sculptor began drilling into the originally 5,725 foot tall mountain when he was 60 years old. The workers had to climb 506 steps daily to get to the top. I think Mount Rushmore would be interesting to learn about.
2. My second choice would be the Sears Tower. It is the tallest building in the United States, 1,450 feet and seven inches to be exact. It has 110 floors and 104 elevators! It also has about 16,100 bronze tinted windows. It is located in Chicago, Illinois and cost about $175 million dollars at the time.
3. My third choice would be the Alamo in San Antonio, Texas. It protected the Spanish Army from the Mexican Army. My dad has been there and he said that is was interesting. The battle of the Alamo took place in February 23rd to March 6th 1836. Alamo actually means Cottonwood, people believe it is because the Alamo is surrounded by trees.