The main features of Jongmyo are Jeongjeon (the main shrine), and Yeongnyeongjeon (the Hall of Eternal Peace, an auxiliary shrine). Construction and management of Jongmyo, and the operations of Jongmyo Jerye rituals, are all meticulously recorded in the royal protocols of the Joseon Dynasty. Criterion (iv): Jongmyo Shrine is an outstanding example of the Confucian royal ancestral shrine, which has survived relatively intact since the 16th century, the importance of which is enhanced by the persistence there of an important element of the intangible cultural heritage in the form of traditional ritual practices and forms. Protection and management requirementsThe entire area of Jongmyo Shrine and the individual buildings of Jeongjeon and Yeongnyeongjeon have been designated as State-designated Cultural Heritage under the Cultural Heritage Protection Act, which imposes restrictions on alterations to the property. Conservation work at Jongmyo is carried out by Cultural Heritage Conservation Specialists who have passed the National Certification Exams in relevant fields of expertise.