The Willis Tower, formerly known as the Sears Tower, is an iconic symbol of Chicago, IL and a popular tourist destination. Situated at the heart of downtown Chicago, the Willis Tower is the second-tallest building in the world and one of the most visited attractions in the USA, due to its impressive exterior and interior architecture, as well as its advanced elevator system and 103rd-floor observation deck. The observation deck offers stunning views of the city, allowing tourists to get a sense of its scale and amazing skyline. Connected to the Willis Tower are the Grand Plaza and the Skydeck – both offering unique attractions, from shops to dining options. With its combination of modern architecture and classic style, the Willis Tower is sure to provide visitors with an unforgettable experience.