Esrum Abbey is a former Cistercian monastery located in Denmark, founded in 1151. It was established by monks from Vitskøl Abbey and played a significant role in the region's religious and agricultural development during the Middle Ages. The abbey was known for its extensive lands and influence in the area. The abbey was dissolved in 1536 during the Danish Reformation, leading to the decline of its religious significance. Today, the ruins of Esrum Abbey are a popular tourist attraction, offering visitors a glimpse into the history of monastic life and the architectural style of the time.