Built in the Scottish Baronial style in 1903, the Castle was added to the National Register of Historic Places in 1972.

[2] George Joslyn made his fortune in the ready-print news business and owned the Western Newspaper Union.

Landscape architect Jens Jensen designed the grounds, as well as the rock work and pools for the conservatory inside the house.

[3] The 35-room mansion has four stories, as well as a carriage house tower, built before the Castle in 1901, and 5 acres (20,000 m2) of formal gardens and landscaping, including greenhouses, which were completed in 1899.

Mature trees were planted on the 5.5-acre (22,000 m2) grounds, and Sarah collected rare botanicals from around the world, including orchids.

In the conservatory, many of Sarah Joslyn's orchids and other tropical plants were killed by the cold and snow which followed the tornado.

The home was repaired and that fall, the Castle hosted a gala event for the wedding of their daughter, Violet.