Chip and Joanna Gaines are selling their castle.Lisa Petrole/MagnoliaChip and Joanna Gaines are selling the castle they renovated in Waco, Texas, for almost $2.7 million.Called the Cottonland Castle, the historic home has four bedrooms and three and a half bathrooms.They previously put the castle up for auction in 2023.Chip and Joanna Gaines are selling off a fairytale space.The "Fixer Upper" couple owns several properties in their home city of …