Winchester Mystery House - continuous construction and odd architecture

Sarah Winchester oversaw continuous construction on her mansion from about 1884 until her death in 1922, producing a maze-like house with architectural oddities such as staircases that end at ceilings and doors that open onto walls. The property is preserved as a museum and is widely publicized for these unusual design features. Stories of spirits and hauntings are commonly associated with the site, but such claims are anecdotal and not empirically verified.