Singhasari is a historical kingdom that existed in East Java, Indonesia, during the 13th century. It was known for its powerful rulers and significant cultural achievements, particularly in the fields of art and architecture. The kingdom played a crucial role in the spread of Hinduism and Buddhism in the region. The most famous ruler of Singhasari was Kertanegara, who expanded the kingdom's influence and established strong trade relations. The kingdom is also noted for the construction of the Singhasari Temple, which reflects the artistic style of the time. Singhasari eventually became part of the larger Majapahit Empire.