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$100 million De Guigné estate comes with quite a contingency stair landing

(Photo via Sotheby's International Realty)

Photos: Hillsborough's Guigne Court, marked down $60 million

Surprise: Turns out no one wanted to pay $100 million for a mansion that came with the owner. Christian de Guigne IV has marked down the property to $39.9 million — and now he'll let the buyer take possession immediately. The 78-year-old had originally stipulated that he be allowed to live there until he dies. Click here to read more about it on Yahoo Homes.

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