Nynäs Castle

Nynäs Castle is a historic manor house located in Tystberga, approximately 80 kilometers south of Stockholm, Sweden. Situated between the towns of Trosa and Nyköping, the estate occupies a significant coastal area where archaeological evidence suggests human settlement dating back to the Bronze and Iron Ages. The property was first officially mentioned in a 1328 letter and has since been owned by prominent Swedish aristocratic families, including the Grip, Gyllenstierna, Hildebrand, and Bonde houses. The current main manor-house was constructed by the Gyllenstierna family in the late 17th century, establishing it as a enduring symbol of noble life in the region.

The castle is renowned for being one of the best-preserved historic houses open to the public in Sweden. It offers visitors an authentic glimpse into the country lifestyle of the Swedish aristocracy from the late 1600s through the early 20th century. The Gripenstedt family was the last private owner, residing there from the 1840s until 1984. Since that time, the province of Sörmland has assumed responsibility for the care and maintenance of both the manor and its extensive grounds. The surrounding nature reserve is the largest in Södermanland County, covering over 8,000 acres of diverse landscape that was once a vital inland waterway connected to the Baltic Sea.

Today, the estate serves as a cultural heritage site and popular destination for tourists interested in history and nature. In addition to the preserved interior of the main house, the grounds feature a historic Orangery built in 1907, which currently houses a restaurant and a gardening shop. The site remains a testament to centuries of continuous habitation and aristocratic tradition, with descendants of the former owning families still visiting occasionally. Its combination of architectural integrity, vast natural reserves, and deep historical roots makes it a unique landmark in southeastern Sweden.