John Hancock Tower is the tallest building in Boston. John Hancock, a representative of Massachusetts at the Continental Congress, was the first signer of the Declaration of Independence. He served as President of the Continental Congress from 1775 to 1777. After the Independent Revolution, he served as governor of Massachusetts and died in office. In memory of the revolutionary and statesman, the building was named after him. Chicago also has the Hancock Tower in memory of him. There are many skyscrapers with glass curtain walls, but it seems rare that they are so delicately designed that they coexist harmoniously with the surrounding environment. Hancock Building is located on the side of Capley Square in Boston. The tall blue glass curtain wall is like a mirror. The blue sky, white clouds and the ancient Trinity church are reflected in this huge mirror, which makes the modern building merge with the old building and the bright sky. White clouds drift through the sky, moving slowly on the mirror curtain wall, very dynamic.