The Winchester Mystery House is a landmark in San Jose, CA. It was once the residence of Sarah Lockwood Pardee Winchester, the widow of William Wirt Winchester and heiress to a large portion of the Winchester® Repeating Arms fortune.
Sarah began renovating the farmhouse she bought in San Jose in 1886, and didn't stop renovating until her death in 1922. It grew from an eight room farm house to a sprawling mansion of 24000 square feet with 10,000 windows, 2,000 doors, 6 kitchens, and THIRTEEN bathrooms, one of which has 13 drain holes in the sink. There are also 13 coat hooks in the Seance Room, and 13 parts to her will, which she signed 13 times.
You can find out other quirky facts about Sarah and her home on-line.
[This was an unlucky cache, as it was originally located elsewhere, but unfortunately was too close to the final of a multi, so it had to be moved!]