Officially profession, architects 

There are various paths that one can take to become a professional interior designer. All of these paths involve some form of training. Working with a successful professional designer is an informal method of training and has previously been the most common method of education. In many states, however, this path alone cannot lead to licensing as a professional interior designer. Training through an institution such as a college, art or design school or university is a more formal route to professional practice.

In the UK and the U.S, several university degree courses are now available, including those on interior architecture, taking three or four years to complete.

A formal education program, particularly one accredited by or developed with a professional organization of interior designers, can provide training that meets a minimum standard of excellence and therefore gives a student an education of a high standard. There are also university graduate and Ph.d. programs available for those seeking further training in a specific design specialization (i.e. gerontological or healthcare design) or those wishing to teach interior design at the university level. Main article: Interior design education

 to work as Interior Designers. This can be seen from the references of Vishwakarma the architect - one of the gods in Indian mythology. Additionally, the sculptures depicting ancient texts and events are seen in palaces built in 17th-century India.

In ancient Egypt, "soul houses" or models of houses were placed in tombs as receptacles for food offerings. From these, it is possible to discern details about the interior design of different residences throughout the different Egyptian dynasties, such as changes in ventilation, porticoes, columns, loggias, windows, and doors. 

Throughout the 17th and 18th century and into the early 19th century, interior decoration was the concern of the homemaker or an employed upholsterer or craftsman who would advise on the artistic style for an interior space. Architects would also employ craftsmen or artisans to complete 

Interior Design for their Buildings

In the mid-to-late 19th century, interior design services expanded greatly, as the middle class in industrial countries grew in size and prosperity and began to desire the domestic trappings of wealth to cement their new status. Large furniture firms began to branch out into general interior design and management, offering full house furnishings in a variety of styles. This business model flourished from the mid-century to 1914, when this role was increasingly usurped by independent, often amateur, 

Designers. This paved the way for 

the emergence of the professional interior design in the mid-20th century

In the 1950s and 1960s, upholsterers began to expand their business remits. They framed their business more broadly and in artistic terms and began to advertise their furnishings to the public. To meet the growing demand for contract interior work on projects such as offices, hotels, and public buildings, these businesses became much larger and more complex, employing builders, joiners, plasterers, textile designers, artists, and furniture designers, as well as engineers and technicians to fulfill the job. Firms began to publish and circulate catalogs with prints for 

Different Lavish Styles 

to attract the attention of expanding middle classes

Commercial design encompasses a wide range of subspecialties.

• Retail: includes malls and shopping centers, department stores, specialty stores, visual merchandising, and showrooms.
• Visual and spatial branding: The use of space as a medium to express a corporate brand.
• Corporate: office design for any kind of business such as banks.
• Healthcare: the design of hospitals, assisted living facilities, medical offices, dentist offices, psychiatric facilities, laboratories, medical specialist facilities.
• Hospitality and recreation include hotels, motels, resorts, cruise ships, cafes, bars, casinos, nightclubs, theaters, music and concert halls, opera houses, sports venues, restaurants, gyms, health clubs, and spas, etc.
• Institutional: government offices, financial institutions (banks and credit unions), schools and universities, religious facilities, etc.
• Industrial facilities: manufacturing and training facilities as well as import and export facilities.[23]
• Exhibition: includes museums, gallery, exhibition hall, especially the design for showroom and exhibition gallery.
• Traffic building: includes the bus station, subway station, airports, pier, etc.
• Sports: includes gyms, stadiums, swimming rooms, basketball halls, etc.
• Teaching in a private institute that offers classes of interior design
• Self-employment
• Employment in private sector firms

Other areas of specialization include amusement and theme park design, museum and exhibition design, exhibit design, event design (including ceremonies, weddings, baby and bridal showers, parties, conventions, and concerts), interior and prop styling, craft styling, food styling, product styling, tablescape design, theatre and performance design, stage and set design, scenic design, and production design for film and television. Beyond those, interior designers, particularly those with graduate education, can specialize in healthcare design, gerontological design, educational facility design, and other areas that require specialized knowledge. Some university programs offer graduate studies in these and other areas. For example, both Cornell University and the University of Florida offer interior design graduate programs in Environment and Behavior Studies...