Office buildings are structures designed to house businesses and organizations. They provide spaces where employees can work, hold meetings, and collaborate on projects. These buildings often have multiple floors, with each floor containing various offices, conference rooms, and common areas. Many office buildings are equipped with modern amenities like elevators, restrooms, and break rooms to enhance the work environment. In urban areas, office buildings can be found in business districts, contributing to the city's economy. Some well-known examples of office buildings include the Empire State Building in New York City and the Willis Tower in Chicago. These iconic structures not only serve as workplaces but also as landmarks.