One of the most unusual houses in the world is the Winchester Mansion in California.
There are 160 rooms, 2,200 dors, 10, 000 windows, 3 elevators, 9 kitchens, and kilometres of secret passages, corridors and stairways. Some rooms are only a few centimetres wide, some stairways go nowhere, and many windows open onto blank walls. The owner of the house, Mrs Sara Winchester, spent over $ 5,000,000 on it. She feared that she would die if she stopped adding rooms to her house!