Trump International Hotel & Tower

This recent addition to the Windy City's skyline appears to reflect the signature angular styling of the Willis Tower, but the story setbacks—those ledges where the building steps back from its lower heights—were more explicitly designed to align with the heights of nearby structures such as the Wrigley Building and the Marina City Towers. The Trump International Tower and Hotel also stands as the tallest building in the world to use reinforced concrete as its primary structural material