Aon

The third tallest building in Chicago, I went in on the open day to see the panoramic view of Chicago! ! Awesome! The Cloud Gate of Millennium Park is really smaller than a bean when viewed from such a high place. People have become little ants haha

怡安中心算是怡安集团的建筑，整个建筑就是摩天大楼，是当时的第一高，非常霸气，推荐看看。

这在芝加哥中心一定要好好的去参观一下怡安中心，挺棒的。

l It is purely the headquarters of Aon Group, which was introduced by others. When it was completed, it was the tallest in Chicago. It was later replaced by Sears Tower. The building is square, very simple, but very magnificent.

He was the tallest building in Chicago. Later, the Hills Tower surpassed his height, but it was still very tall. The building is rectangular, with a white granite surface and a two-inch thick granite slab, which is very distinctive!