And I love this beautiful round Global Forever stamp that shows the beauty of our entire planet.(Issued: 28-01-2013)
From the artist Dennis Alex who spent 5 years illustrating 52 different landmarks in the Chicago area in the book "Curves&Crevices: Romancing Chicago".
Sears Tower is a 108-story skyscraper. Now called the Willis Tower it is the tallest building in the US and one of the most popular tourist destinations in Chicago.