The Rattanakosin Era began in 1782 when King Rama I established the city of Bangkok as the capital of Thailand. This period marked the transition from the Ayutthaya Kingdom to a new era of centralized rule, cultural development, and modernization. The era is characterized by the construction of significant landmarks, including the Grand Palace and Wat Phra Kaew. Throughout the Rattanakosin Era, the Thai monarchy played a crucial role in shaping the nation's identity and governance. The era saw the introduction of Western influences, reforms in education, and the establishment of a modern legal system. It continues to influence Thai culture and politics today.