Arrange a date to travel to the Winchester Mystery House. The house is open every day except Christmas, and offers midnight tours every Friday the 13th as well as on Halloween.
Choose a tour. The midnight tours are rare and exciting. The regular tour will show you much of the house, while the behind-the-scenes tour will take you through some of Sarah Winchester's secret passages. When you're done with one or both of these, stroll through the gardens and the rifle museum at no additional charge.
Buy tickets in advance, particularly for the flashlight tours, or show up early so that you have plenty of time to get settled in and perhaps explore the gift shop (see Resources below).
Bring a camera and record some of the fun and eccentric features like the stairway into the ceiling and the window built into the floor.
Be sure to follow the directions of your tour guide to help ensure that the mansion is preserved for the future.