Knockbrex Castle, also known as the Toy Fort, is a folly-turned-holiday destination near Gatehouse of Fleet in the Carrick area of Dumfries and Galloway. Originally built as an ornamental structure and motor house by James Brown, a wealthy Manchester cloth merchant, the estate buildings were constructed between 1895 and 1920. Rescued from disrepair during the early 1990s, the castle was subsequently developed into a holiday rental property and now operates as a self-catering accommodation. The estate combines architectural whimsy with practical heritage restoration, offering visitors a unique glimpse into Victorian-era estate building and early 20th-century transformation.