Owl and Beaver House by Valentino Agnoli is an example of organic architecture – a philosophy of architecture which promotes harmony between human habitation and the natural world. In its many forms, organic architecture relates to materiality, composition within landscape, ordering principles and motifs. In its other rarer forms, organic architecture is inspired directly and visibly by the forms found in nature from fauna to flora. Amongst its proteges, organic architecture includes Frank Lloyd Wright and Alvar Aalto. Completed in 1997, Owl and Beaver House near Lake City in Florida is in the latter of the organic architecture groupings mentioned here. It is a raised curvilinear sculptural building set in six acres of forested land on the Ichetucknee river. The house was designed as a writer’s retreat and is now for sale for $550,000 (£360,000). It is up in the trees of an ancient cypress forest like a tree house, and it has views of the tops of trees and the river from it’s huge windows. With 600 square feet of space, the house contains a kitchen/dining room, living room, bedroom and bath on the main floor and a bedroom under the bow.