Stora Wäsby Castle

Stora Wäsby Castle is a historic manor house located in Upplands Väsby, Sweden, within Stockholm County. Although the estate dates back to the Middle Ages, the current main building was constructed during the 1760s. This two-story stone structure is a prime example of Rococo architecture. The original design was created by the renowned architect Carl Hårleman, but following his death in 1753, the project was completed under the direction of architect Jean Eric Rehn. The castle sits adjacent to a Baroque Park that was originally laid out in the seventeenth century, adding to the site's historical landscape value.

The property holds significant historical importance as it became a fideicommissary estate within the prominent De Geer family in 1730, ensuring its preservation through generations. Over the centuries, the complex has evolved to include approximately ten buildings, all of which are currently listed for their cultural and architectural heritage. In the 1920s, further renovations were undertaken by architect Isak Gustaf Clason, who updated both the interior and exterior of the manor to maintain its grandeur. Today, Stora Wäsby remains a protected landmark that reflects centuries of Swedish aristocratic history and architectural development.

As a designated heritage site, the castle represents a continuous link between medieval origins and eighteenth-century artistic refinement. The involvement of three distinct architects across different eras highlights its evolving role and enduring status in the region. While specific details regarding modern public access or current private ownership are not extensively detailed in available records, the listing of all associated buildings confirms its well-maintained condition. The estate continues to stand as a notable feature of Upplands Väsby, preserving the legacy of the De Geer family and the architectural visions of Hårleman, Rehn, and Clason.