History: House On The Rock, 1907, San Francisco, United States

Houses and symbolism
Houses may express the circumstances or opinions of their builders or their inhabitants. Thus a vast and elaborate house may serve as a sign of conspicuous wealth, whereas a low-profile house built of recycled materials may indicate support of energy conservation.
Houses of particular historical significance (former residences of the famous, for example, or even just very old houses) may gain a protected status in town planning as examples of built heritage and/or of streetscape values. Commemorative plaques may mark such structures.