Throughout history, hotels have provided accommodation for travelers. They provide a variety of facilities and services, such as swimming pools, restaurants, recreational areas, and conference rooms. These accommodations are typically available for one night or for a longer period. They offer food and beverages, as well as other services, including meeting rooms, healthcare, and retail shops. In modern hotels, guests have access to a variety of amenities, such as broadband Internet, cable TV, and basic telephone facilities. These amenities may include a mini-bar and a tea and coffee making unit with an electric kettle. The facilities offered by the hotel may also include a swimming pool or a private party room. Some hotels also provide a gym and a spa. In the United States, the hotel industry was largely affected by the great depression of the 1930s. However, during the 1940s and 1950s, the hotel industry began to experience steady growth. This growth led to the development of large hotels and motels. These establishments offered travelers a place to stay for a reasonable price. In the 1960s, motels began offering free parking as a way to attract travelers. The hotel industry also evolved in Europe. During the 18th century, prominent European cities began to offer lodging facilities. These establishments were based on the French townhouse model. However, they were more luxurious and offered high-end services. These hotels primarily served wealthy travelers and were often the residence of aristocrats. The history of the hotel industry can be traced back to the fifth Duke of Devonshire. In the early seventeenth century, this wealthy gentleman used the word hotel to describe his residence. However, the word hotel was also used to refer to a French townhouse. These early hotels offered a limited amount of facilities, including rooms with beds and en-suite bathrooms. The organization structure of a hotel varies depending on the establishment's objectives and size. Typically, an establishment has an organization chart, which defines the roles and responsibilities of its employees. The chart also indicates authority distribution. The human resource department is responsible for recruiting and training employees, overseeing labor laws, and overseeing employee welfare and orientation. This department also carries out safety norms for the hotel. The hotel security department is responsible for protecting hotel property and staff, conducting fire drills, and patrolling the hotel. The department also keeps surveillance equipment and other hotel assets safe. The hotel's financial controller is responsible for ratifying inventory items for operational departments and finalizing budgets prepared by other departments. The department also handles financial control, which includes accounting activities such as processing employee payroll data and collecting payments. The general strategy provides the basis for distribution, rates, and marketing activities. Revenue management components are a vital part of hotel profitability. Revenue managers focus on more than occupancy and measure the value of a room in the global economic outlook. The main benchmarking tool used by big hotels is the total revenue per available room (TRevPAR). It includes the distribution costs and marketing costs that are associated with a room.