Merchandise Mart Building - From Willis Tower Skydeck Observatory, United States
The Merchandise Mart Building and Willis Tower Skydeck Observatory are two distinct Chicago attractions that stand out among the city's skyline. The Merchandise Mart is the world's largest building and home to businesses, restaurants and thousands of events every year. Willis Tower Skydeck, built on the west side of the building, provides breathtaking views of the city and Lake Michigan. Willis Tower has a glass observation deck on the 103rd floor, which is one of the highest in the world; visitors can also stand on the open-air Skydeck on the 103rd floor, which offers 360-degree views of Chicago. The Skydeck also has interactive exhibits that explore notable landmarks within the city. Both attractions are popular among tourists and offer great photo opportunities.