UNUSUAL BUILDINGS ARCHIECTURE | The "Mushroom House" in Cincinnati, Ohio. The "Mushroom House", or "Tree House", as it is also known, was the creation of the late Terry Brown . Professor of Architecture and Interior Design, at University of Cincinnati Brown created the building with the help of university students. The home is constructed of a variety of materials ... wood, shells, tiles, metals and glass. It showcases Brown's uniqueness and eccentricity.