"House of the Dragon" is an upcoming American television series created by George R. R. Martin and Ryan Condal for HBO. The series is set in the world of Martin's "A Song of Ice and Fire" novels, which were adapted into the HBO series "Game of Thrones." The series will be a prequel set in the world of Westeros and will chronicle the history of House Targaryen, including events leading up to the Targaryen civil war known as the Dance of the Dragons. It is expected to focus on the rise and fall of the Targaryen dynasty, their alliance with the dragonlords of Valyria, and the world-changing events that occurred before the events of the main series. The series is set to be premiered in 2022. "House of the Dragon" was filmed using a combination of live-action and visual effects. The series was filmed on location in several countries, including Spain, to provide the backdrop for the fictional world of Westeros. The visual effects were used to create the dragon creatures, and to enhance and enrich the fantasy world depicted in the series. The production team also used various techniques to create the look and feel of the medieval world, such as using practical effects, such as prosthetic makeup, and constructing detailed sets and costumes. CGI was used to create the dragons and other fantasy elements that appear in the series. The dragons were created through a combination of motion capture, practical effects, and computer-generated imagery. The motion capture was used to capture the movements of the dragons, while the practical effects were used to create the physical appearance of the dragons, and the CGI was used to bring the dragons to life on screen. The series was produced by George R. R. Martin, Ryan Condal, and others, and directed by Miguel Sapochnik and several others.