erched atop a hill overlooking the Kansas River, on a winding street in an affluent residential neighborhood, Sauer Castle of Kansas City still looks like something ripped from a Gothic ghost story. Built between 1869 and 1871, the two-and-a-half story house with its soaring tower and widow’s walk is said to be the finest example of 19th-century Italianate architecture in the state of Kansas. It’s also said to be extremely haunted.